bluuebunny/crossref_metadata_2025 huggingface dataset:
Epidermal morphology of six taxa of Ipomoea L. in Nigeria
Authors: Ugborogho R. E. , Ogunwenmo K. O. , Aina O. I.
Published: August 2010

Stomatal measurements, x̄L/x̄B, distribution, types and structural variations are discussed for six taxa of Ipomoea L. in Nigeria. Considerable overlaps are recorded in the stomatal quantitative measurements. The taxa investigated are amphistomatous but with higher frequency of stomata on the abaxial surface. The paracytic stomata are frequent and common to all the taxa studied. Nevertheless, the anisocytic, contiguous, amphianisocytic and hemiparacytic types are recorded for the first time in these Nigerian taxa of the genus.
Einige Betrachtungen über Flora, Vegetation und Klima des unteren Sarmats von Erdöbénye (Ungarn)
Authors: Givulescu R. , Cluj‐Napoca
Published: August 2010

Auf der Basis von Literaturangaben werden Flora, Vegetation, Ökologie und Klima der untersarmatischen Flora von Erdöbénye (Ungarn) revidiert. Argumente für ein xeromorphes Klima gibt es nicht. Die fossile Vegetation deutet auf ein warmgemäßigtes Klima mit variablen Niederschlägen hin.
Die Vegetation des Clanssees bei Feldberg in Mecklenburg
Authors: Doll R.
Published: August 2010

In der vorliegenden Arbeit wird die Vegetation des Clanssees dargestellt. Es konnten 23 Vegetationseinheiten ermittelt werden sowie verschiedene Gehölz‐Gesellschaften.
Study on some hybrids from Chenopodium album agg. With 14 Figures and 2 Tables
Authors: Dvořák F.
Published: August 2010

The blade of the species C. laciniatum J. MURR emend. D. has in the second third of its length ‐ as a rule on both sides ‐ a conspicuous tooth. The plants having this character grow from seeds of C. lanceolatum X (album X pseudostriatum) (2n = 36,54). On the Bohemian‐Moravian Highlands there was collected C. diversifolium (AELLEN). D. whose pollen grains sizes have a normal distribution (in comparison with the lectotype) 2n = 54. C. diversifolium (AELLEN). D. participates in the formation of the genotype of the hybridogenous species C. subficifolium (J. MURR) D.
Cuticular studies and their bearing on the taxonomy of some tropical Scrophulariaceae With 58 Figures and one Table
Authors: Nyawuame H. G. K. , Gill L. S.
Published: August 2010

The structure of the epidermis and the ontogeny of the stomatal complex of 26 tropical taxa of the family Scrophulariaceae are described. The epidermal cells depict variations with the cells being straight‐walled on both surfaces, straight‐walled on the upper surface only or sinuously walled on both surfaces. Trichomes are also variable. The different types of trichomes observed include unicellular eglandular, peltate glandular and multicellular eglandular. All the investigated species except Lindernia crustacea and Veronica abyssinica are hypostomatic. During the present study three types of stomata are recorded, viz: anomocytic, anisocytic and diacytic types. Anomocytic stomata follow agenous or hemiperigenous ontogenetic development whereas the ontogeny of anisocytic stomata is either hemiperigenous or hemimesogenous. Within limitations stomatal distribution and frequency could serve as reliable taxonomic characters in the tropical taxa of the family Scrophulariaceae.
Phytochemical constituents of Momordica L. (Cucurbitaceae) With one Figure and 2 Tables
Authors: Shantha A. , Radhakrishnaiah M.
Published: August 2010

The quantified chemical data on four taxa of Momordica are suggestive of close ties among the species and the dendrogram of cluster analysis undersores their alignment together in one cluster.
Carotenoids in certain lichens from Pamir‐Alai and Tien‐Shan Mountains
Authors: Czeczuga B. , Kudratov I. , Baibulatova N. E.
Published: August 2010

Column and thin‐layer chromatography revealed the presence of the following carotenoids in the thalli of 32 lichen species from the Pamiro‐Alai and Thien‐Shan [Tadzhikistan and Kirgizistan]: torulene, β‐carotene, α‐carotene, β‐carotene, rubixanthin, β‐cryptoxanthin, lutein, 3′‐epilutein, zeaxanthin, diatoxanthin, lycophyll, β‐carotene monoepoxide, lutein epoxide, antheraxanthin, aurochrome, auroxanthin, mutatochrome, mutatoxanthin, violaxanthin, flavoxanthin, luteoxanthin, cryptoflavin, neoxanthin, canthaxanthin, astaxanthin, capsochrome, β‐apo‐2′‐carotenal, 3‐hydroxy‐β‐apo‐10′‐carotenal and apo‐12′‐violaxanthal.

The total content of carotenoids ranged from 7.67 [Lecanora frustulosa from Thien‐Shan, Kuraminski ridge] to 166.83 μg g−1 dry wt [Xanthoria elegans from Thien‐Shan, Kirgiski ridge].
Modellierung der Beziehungen zwischen den quantitativen Merkmalen bei Populationen der Gattung Festuca Sect. Festuca in Böhmen und ihre Bedeutung für die genetische Theorie Mit 2 Abbildungen und 5 Tabellen
Authors: Toman M.
Published: August 2010

Die Studie geht von früheren Veröffentlichungen des Verfassers aus. Sie beschäftigt sich mit dem darin angekündigten Modell der Beziehungen zwischen den einzelnen quantitativen Merkmalen der Gattung Festuca Sect. Festuca in Böhmen. Dabei wird die Übereinstimmung der theoretischen Voraussetzungen mit der Wirklichkeit konstatiert. Gleichzeitig läßt sich ein allgemeines Gesetz aufstellen, das besagt, daß quantitative Merkmale bei Organismen vererbbar sind.
Influence of irrigation on dormancy in two species of the Egyptian desert With 3 Figures and 2 Tables
Authors: Elhaak M. A. , El‐Shourbagy M. N.
Published: August 2010

The shrub species Thymelaea hirsuta and the subshrub species Echiochilon fruticosum were irrigated during their dormant period in their natural habitat in the northern desert of Egypt with 0, 70, 140 and 210 mm water levels. Irrigation decreased the transpiration rates of the two species, except with the 210 mm level which increased transpiration rate of E. fruticosum. Although relative water content (RWC) was increased it did not reach the value of the species during the rainy season. Irrigation activated dry matter accumulation, that exceeded the corresponding values during the active vegetative period, at the rainy season. Also, irrigation had broken dormancy of the two species: revegetation was observed and water use efficiency (WUE) was improved. Irrigation with 120 mm level could be more than the needs of E. fruticosum but not for T. hirsuta.
Seed morphology (LM and SEM) in some Ipomoea L. (Convolvulaceae) With one Figure and one Table
Authors: Rao S. R. Shanmukha , Leela M.
Published: August 2010

The seed coat microsculpturing (LM and SEM) of nine species of Ipomoea L. has been investigated. The spermodern patterns are either simple reticulate, lophate, rugulate or papillose. This study favours the inclusion of I. tuberosa in Ipomoea and maintenance of I. quamoclit under a separate section Quamoclit. A key is presented for delimiting the taxa studied on the basis of seed morphology.
Buxus moctezumaeKÖHLER,FERNÁNDESetZAMUDIO(Buxaceae) una especie nueva de Estado de Querétaro, México Con 37 Figuras
Authors: Köhler E. , Fernández R. , Zamudio S.
Published: August 2010

Buxus moctezumaea new endemic species from Querétaro is described for the Flora of México. In addition to the morphological description the results of character analysis of pollen morphology, leaf venation, leaf anatomy and wood anatomy are presented and discussed with regard to its relationship to the other four species known from México so far.
Systematic studies on the Egyptian species of the family Primulaceae With 3 Plates
Authors: El‐Karemy Z. A. R. , Hosni H. A.
Published: August 2010

A systematic revision of the Egyptian species of the family Primulaceae was carried out. It reveals the presence of the following taxa: Primula boveana L., Asterolinon linum‐stellatum (L.) DUBY, Anagalis arvensis L. var. arvensis, A. arvensis L. var. caerulea (L.) GOUAN, A. arvensis L. var. latifolia (L.) LANGE, Samolus valerandi L. and Coris monspeliensis L. subsp. strossiae GAUBA. Of these A. arvensis L. var. caerulea (L.) GOUAN is a new record to the flora of Egypt. A key, synonyms and notes on distribution are provided.

SEM features of the seed coat and leaf epidermis viz. of the cell patterns, anticlinal cell boundaries and the periclinal cell wall were also examined and proved their taxonomic significances.
The ruderal vegetation of the Mediterranean desert of Egypt With 3 Figures and 4 Tables
Authors: El‐Kady H. F.
Published: August 2010

Five vegetation groups have been recognized along the roadsides of Alexandria‐Sallum highway in the Mediterranean desert of Egypt: group I codominated by Halogeton alopecuroides (Del.) MOQ. and Launaea resedifolia KUNTZE, group II codominated by Echinops spinosissimus TURRA and Polygonum equisetiforme SIBTH. et SM., group III codominated by Hammada scoparia (POMEL) ILJIN and Thymelaea hirsuta (L.) ENDL., group IV codominated by Zygophyllum album L. f. and Plantago albicans L. and group IV codominated by Zygophyllum album L. f. and Helianthemum lippii L. The species diversity of these communities and the ecological amplitude of their leading species along some edaphic gradients were evaluated and discussed.
Structure and distribution of plant trichomes in relation to taxonomy: Indian Physalis L. With 15 Figures and 2 Tables
Authors: Sudhakaran S. , Ganapathi A.
Published: August 2010

The structure and organographic distribution of trichomes in six Physalis L. (Solanaceae) taxa available in the Indian natural populations have been studied. In all, seven trichome types are recognised. Structurally they are distinguishable into two hair classes one comprising sequence from unbranched hairs to branched, dendritic hairs with or without glandular tips. While the other class consists of short hairs each tipped with a unicellular or multicellular head. Of the seven types recognised the unbranched eglandular trichomes present in all the six taxa. Branched trichomes are absent in P. minima and P. angulata. Whereas branched hairs are available with all the other taxa studied. P. peruviana can easily be identified by its dentritic trichomes present in its corolla thorat. The white flowered form is the only form having branched glandular hairs. The glabrescent form is having glabrescent texture and the storied gland with unicellular head. There is no storied glandular trichomes in the case of P. pubescens which is having long silvery hairs around the stem. The distribution of trichomes in general is taxonomically significant. Accordingly a key based on the trichome types for identification of the species is presented.
Foliar stomatal distribution in relation to taxonomy: Amaranthaceae With 6 Figures and one Table
Authors: Padmini S. , Rao S. Raja Shanmukha
Published: August 2010

Foliar stomatal distribution and their taxonomic significance in 45 taxa belonging to 19 genera of the Amaranthaceae have been investigated. Of these, 41 taxa show amphistomatic leaves and the rest are hypostomatic. Based on the dispersion and orientation of stomata, six basic and combination patterns each have been recognised. Many taxa reveal diagnostic stomatal distributional patterns and their taxonomic utility has been discussed. Further, an attempt is made to correlate the stomatal distribution with the plant habit.
Growth pattern of Polygala chinensis L. — a medicinal plant in different environmental conditions With 3 Figures, 6 Tables and on Plate
Authors: Merlee T. M. V. , Avita Sr.
Published: August 2010

India has a rich heritage of herbal medicine. A great majority of India's rural population depends on these medicines for its health needs. Cultivation of medicinal plants is faced with a number of problems. Water, light and soil conditions affect the growth of root and shoot, hence the total biomass.
Epidermal studies of some species of family Solanaceae used in traditional medicine in West Africa
Authors: Nyawuame H. G. K. , Gill L. S.
Published: August 2010

Leaf epidermal structure and developmental pattern of the stomatal complex of 30 species of the family Solanaceae are described. Epidermal cells of almost all the species showed wall sinuousity. However, in Brunfelsia uniflora and some species of the genus Solanum viz. S. aethiopicum, S. dasyphyllum, S. macrocarpon and S. verbascifolium the cells were straight‐walled. Several types of epidermal hairs were observed on both the upper and lower epidermis. They include bicellular eglandular, multicellular stellate and club‐shaped hairs. The leaves of most species were amphistomatic; however, a few species with hypostomatic leaves were also encountered. Mature stomata were either anomocytic or anisocytic with hemimesogeneous developmental pattern. In Schwenkia americana, however, mature stomata were diacytic with eumesogenous developmental pathway. Interspecific variation observed in the distribution, size and frequency of stomata may prove useful in the authentication of the foliar materials of these plants when used as crude drugs.
Species of Spirogyra new to Kerala
Authors: Devi K. Usha , Panikkar M. N. V.
Published: August 2010

The present paper deals with 27 taxa of Spirogyra LINK, collected from ponds and paddy fields in Quilon district, Kerala. Of these, Spirogyra baileyi SCHMIDLE, Spirogyra submarina (COLLINS) TRANSEAU, Spirogyra marvillosa TRANSEAU, Spirogyra bullata JAO, Spirogyra formosa (TRANSEAU) CZURDA, Spirogyra angolensis WELWITSCH, Spirogyra peipingensis JAO, Spirogyra rhizopus JAO, Spirogyra subzylindrospora JAO and Spirogyra nawashini KASANOFSKY are supposed to be new to India and all taxa are reported for the first time from Kerala.
Fossile Koniferenreste in der meridionalen Zone Europas
Authors: Mai D. H.
Published: August 2010

Aus Südeuropa (Südfrankreich, Oberitalien) werden aus miozänen bis ältestpleistozänen Ablagerungen Zapfen von Koniferen beschrieben:Cathaya van‐derburghiiGOSSM.,Picea florschuetziiVAN DER HAMMEN,Pinus cortesiiBRONGN.,P. hampeana(UNG.) HEER,P. nodosaLUDW.,P. ornata(STERNB.) BRONGN.,P. peuceGRISEB.foss., P. saturni(UNG.) UNG.,P. sylvestrisL.pliocaenicaKINK.,P. urani(UNG.) SCHIMP. (Pinaceae).

Die Funde sind von vegetations‐ und klimage‐schichtlicher Bedeutung in der mediterranen Region.
Zur Verbreitung bemerkenswerter Moose in der Umgebung von Budapest (Ungarn)
Authors: Marstaller R.
Published: August 2010

Auf die Verbreitung einiger bryosoziologisch bemerkenswerter Moose aus der Umgebung von Budapest, die zu verschiedenen Florenelementen gehören, wird eingegangen. Folgende Arten sind durch Verbreitungskarten dargestellt: Grimmia tergestina, G. orbicularis, G. anodon, Hypnum vaucheri, Ctenidium molluscum, Distichium capillaceum, Scapania calcicola, S. aspera, Pedinophyllum interruptum, Seligeria pusilla, Paraleucobryum longifolium, Hedwigia ciliata, Grimmia laevigata, G. ovalis, Dicranum tauricum.
Sideritis fontiqueriana ‐ eine neu endemische Art aus dem Rif‐Gebirge (Marokko)
Authors: Peris J. B. , Romo A. , Stübing G.
Published: August 2010

Aus dem Rif‐Gebirge (Marokko) wird eine neue Art der Gattung Sideritis L. (S. fontiqueriana) beschrieben.
Should Cardaria draba (L.) DESV. be classified within the genus Lepidium L. (Brassicaceae)? Evidence from subunit polypeptide composition of RUBISCO
Authors: Mummenhoff K.
Published: August 2010

The polypeptide composition of the large and small subunits of ribulose‐1,5‐bisphosphate carboxylase/oxy‐genase (RUBISCO) from Cardaria draba (L.) DESV. (Brassicaceae) and from representatives of the related genus Lepidium L. have been studied by isoelectric focusing (IEF) analysis. In the literature Cardaria DESV. is either treated as a separate genus or as a section within the genus Lepidium Cardaria draba (L.) DESV. and three Lepidium taxa of section Lepia (DESV.) DC. are characterized by identical polypeptide patterns otherwise not found in Lepidium. RUBISCO data would preliminarily suggest that C. draba has its closest relatives within Lepidium section Lepia and therefore could possibly be placed best within this section.
Species of Ulva (Chlorophyceae, Ulvales) from Kerala coast of India
Authors: Sindhu P. , Panikkar M. V. N.
Published: August 2010

Six species of the genus Ulva LINNAEUS (U. beytensis THIVY et SHARMA, U. fasciata DELILE, U. lactuca LINNAEUS, U. quilonensis sp. nov., U. reticulata FORSK. and U. rigida C. A. AGARDH) including one new species are described from Kerala, India.
Floristic and phytogeographical research on the upper montane and the subalpine grassland flora of East Macedonia, Greece
Authors: Karagiannakidou V. , Konstantinou M. , Papademetriou K.
Published: August 2010

The vascular flora of subalpine and upper montane grasslands of Mts Menikion, Pangeon, Falakron, Orvilos in E Macedonia was investigated. A list of 547 taxa, which are classified to 59 families, 225 genera, 401 species and 146 subspecies, is presented. The majority of the taxa are hemicryptophytes (66.4%). The chamarphytes are also highly represented (16%), though to a much lesser extent. On the basis of duration of life, perennial herbs predominate. As far as it concerns the chorological distribution of the taxa, a remarkable dominance of the “northern”‐in a wide sense‐with an abundance of Balkan endemics is observed.
Die Wildkrautflora unterschiedlich bewirtschafteter Kaffeeplantagen in Chiapas, Mexiko
Authors: Weber G.
Published: August 2010

Auf einer biologisch‐dynamisch bewirtschafteten Kaffeeplantage, einer intensiv genutzten Plantage mit chemischem Input und einer extensiven, chemiefreien aber nicht biologisch bewirtschafteten Kaffeeplantage in Chiapas/Mexiko wird ein pflanzensoziologischer Vergleich der Wildkrautvegetation durchgeführt. Synoptische Tabellenarbeit ergibt für jeden Bewirtschaftungstyp unterscheidbare Wildkrautvergesellschaftungen. Mittels kanonischer Korrespondenz‐analyse (CCA) konnten die wichtigsten Umweltfaktoren für die Bildung dieser lokalen Gesellschaften erkannt und die Datenerhebung auf Vollständigkeit überprüft werden. Die Untersuchung zeigt, daß den jeweiligen Bewirtschaftungsformen deutlich unterscheidbare Wildkrautgesellschaften zugewiesen werden können.
Die azidophytische Bryophytenvegetation in einigen Gebirgen der Umgebung von Budapest, Ungarn
Authors: Marstaller R.
Published: August 2010

Aus der Umgebung von Budapest (Nordungarn) werden im Budaer Gebirge, Pilis und Naszály die azidophytischen Moosgesellschaften der Verbände Grimmion commutatae, Ceratodonto‐Polytrichion piliferi, Grimmio‐Hypnion cupressiformis, Dicranellion heteromallae und Dicrano‐Hypnion filiformis beschrieben. Sie kennzeichnen trockene bis frische, lichtreiche oder schattige Standorte auf Sandstein und Sandboden, Löß und mineralarmer Borke. Alle Gesellschaften werden in ihrer soziologischen Struktur durch 13 Tabellen belegt, in ihrer Verbreitung, ihrem ökologischen Verhalten und ihrer synsystematischen Stellung charakterisiert. Als neues Syntaxon wird das Hedwigietum albicantis grimmietosum hartmanii beschrieben.
Studies in Annonaceae XXVII. Novelties in neotropical Annonaceae
Authors: Maas P. J. M. , Chatrou L. W.
Published: August 2010

In the framework of the multidisciplinary Annonaceae project, monographs of the neotropical genera Duguetia (ca. 75 species) and Malmea (ca. 30 species) are being prepared by both authors. Two new species, one of Duguetia and one of Malmea, are herewith described.
Wuchsverhalten und Infloreszenzstruktur in der Gattung Nebelia (Bruniaceae)
Authors: Classen‐Bockhoff R.
Published: August 2010

Die Verzweigungs‐ und Blühverhältnisse von fünf Nebelia‐Arten werden detailliert dargestellt, Alle Arten wachsen als Hartlaubsträucher und sind Elemente des südafrikanischen Fynbos. Sie sind sympodial organisiert; bei einigen Arten treten jedoch mehrere monopodiale Verkettungen auf, bevor das Sympodialglied abgeschlossen wird.

Die Pflanzen zeigen in allen Lebensphasen eine hohe vegetative Vitalität, dennoch läßt sich eine juvenil geprägte frühe Blüphase von einer älteren Blühphase (kürzere Zuwachseinheiten, Achsen‐ und Zuwachsdimorphismus) abgrenzen.

Die Blütenstände (einfache/zusammengesetzte Rumpfcephaloide) stehen terminal und/oder seitlich an sylleptisch blühenden Seitenachsen. Sie werden als ‚florale Einheiten’︁ über ihre Lage zur Innovationszone vom ausdauernd‐vegetativen Bereich des Blühtriebes abgegrenzt.

Aufgrund der hohen Variationsbreite (monopodiale/sympodiaie Zuwachsverkettung, einfache/zusammengesetzte Blütenstände, frühe/reife Blüphase, terminale und/oder seitliche Position von Blütenstanden) ist ein direkter Vergleich der einzelnen Arten schwierig. Mit Hilfe des ‚Blühtrieb’︁‐Konzeptes wird ein Gattungsmodell für Nebelia erstellt, auf das sich alle Arten beziehen lassen.
Inflorescence morphology of the Malayan species of Phyllagathis (Melastomataceae)
Authors: Weber A.
Published: August 2010

The five inflorescence types occurring in the Malayan species of Phyllagathis (which cover essentially the spectrum of the whole genus) are demonstrated to represent modifications and derivations of a monotelic (determinate), hom(oe)ocladic thyrse. The elongate, spike‐like thyrse (usually referred to as ‘panicle’ in the taxonomic literature) as found in P. griffiihii, P. stolonifera and P. cordata appears to be the most primitive type, from which – obviously independently – the ‘umbels’ of P. hispida and P. scortechinii have envolved. In the ‘umbel’ of the latter the central flowers (including the terminal flower) regularly fail to develop (truncation, polytelic organization!). The meristematic apex often extends to an oval or band‐like structure; this may divide into two or three portions and give rise to acrogeneous branching. Quite different ‘umbel’ types are found in P. tuberculata, P. magnifica (both with ‘compound umbels’ = globose or hemisphaerical thyrses with long‐pedunculate cymes) and P. stonei (‘simple umbel’ achieved by complete reduction of the cyme peduncles). In the ‘heads’ of P. rotundifolia and P. praetermissa a distinct involucrum is developed by the enlargement of the cyme bracts. The thyrses of Anerincleistus fruticosus are mostly reduced to fewflowered aggregates or solitary flowers. With regard to position, the epipetiolar displacement of the inflorescences onto a ‘phyllophore’ (P. cordata, P. scortechinii) is of particular interest.
Application of the algorithm of the deductive method of syntaxonomic classification on an example of trampled communities in the Biosphere Reserve Křivoklátsko (Central Bohemia)
Authors: Dostálek J.
Published: August 2010

This work presents a practical application of the algorithm of the deductive method of syntaxonomic classification on trampled communities in the area of the Biosphere Reserve Křivoklátsko (Central Bohemia). By this procedure the communities were classed into units of a selected phytocenological system.

Communities with predominant Anthemis cotula; Capsella bursa‐pastoris, Chamomilla recutita, Chamomilla suaveolens, Lepidium ruderale, Lolium perenne, Plantago media, Poa annua. Polygonum arenastrum, Potentilla anserina, Potentilla reptans, Urtica urens and other sporadically occurring trampled communities were evaluated. The text includes a description of the position of these communities in the frame of the phytocenological system and brief data on their synecology and distribution in the studied area.
A contribution to the study of three taxa of the genus Lupinus from North Greece
Authors: Drossos E. , Symeonidis L. , Karataglis S.
Published: August 2010

The relationships among three taxa of genus Lupinus (L. micranthus, L. albus subsp. graecus and L. angustifolius) from Northern Greece were studied.

Data of morphometric parameters of fruits and seeds and peroxidase patterns of shoots suggest that: 1. The three studied taxa are separated and distinct. 2. L. micranthus is closer to L. angustifolius than to L. albus subsp. graecus. 3. L. albus subsp. graecus seems to possess a central position and to be equidistant from L. micranthus and L. angustifolius.
Die Samenbank unterschiedlicher Feuchtgrünland‐Gesellschaften Schleswig‐Holsteins und ihre Bedeutung für den Artenschutz
Authors: Drückhammer A. , Wried S.
Published: August 2010

The seedbank of widespread humid meadowland communities has been examined by means of germination experiments.

The entire density of seed amounted between 6000 and 85000 (grains of) seed/mr2.

On principle there were more species to be found in the seedbanks than in the covering of vegetation.

Most species of the actual vegetation were also, registered in the seedbank. Supplementary species appeared, which have not appeared in the stocks of the testing areas. This is explained by their seedbank‐characteristics.

Typical humid‐meadows species, which were missing in the rezent vegetation could be detected in the seedpotential as exceptions only.

The examined seedbanks are dominated by a few species only. Juncus effusus predominated in almost all sampling areas.

The correspondence of the species' spectrum with that of the seedbank is greater in the upper 4,5 cm ground than it is in the following layers. Only a few species show greater amounts of seed in deeper layers than close to the surface.

For the restoration of humid meadows with a large number of species the seedbank of the examined stocks offers unfavourable conditions. This is due to its combination of species and the dominations within.
Puccinia kreiselii sp. nova, a new rust species on Laserpitium prutenicum
Authors: Scholler M.
Published: August 2010

Eine neue Rostpilzart auf Laserpitium prutenicum (Umbelliferae), Puccinia kreiselii, wird aus Deutschland beschrieben. P. kreiselii gehört in den Formenkreis der P. pimpinellae. Neben dem Wirtsspektrum unterscheidet sich P. kreiselii von verwandten Arten vor allem durch die Größe der Uredinio‐ und Teliosporen sowie durch die Wanddicke der Urediniosporen.
Ein vierter Fund des kreidezeitlichen Baumfarns Rhizodendron oppoliense GÖPPERT 1865
Authors: Daber R.
Published: August 2010

Fragmente des verkieselten Baumfarnes Rhizodendron sind neuerdings in pleistozänen Kiesen in der Nähe von Senftenberg gefunden worden. Der Stammquerschnitt zeigt in dichter Packung die kleinen Adventivwurzeln in sehr gutem Erhaltungszustand.
Vereinigung der Gattung Taeckholmia BOULOS mit der Gattung Sonchus L. (Compositae) und Emendation des Subgenus Dendrosonchus SCH. BIP
Authors: Reifenberger U. , Reifenberger A.
Published: August 2010

In dieser Arbeit wird die Gattung Taeckholmia BOULOS 1967 mit Sonchus L. wiedervereinigt. Zum einen haben unsere morphologischen Nachuntersuchungen zahlreicher einschlägiger Arten der Kanarischen Inseln ergeben, daß die für Taeckholmia angegebenen diagnostischen Merkmale weder auf alle zu Taeckholmia gerechneten Arten zutreffen, noch auf diese beschränkt sind und also keine brauchbare Grenze zu den übrigen Sonchus‐Arten bilden. Zum anderen würden diese Merkmale, die nach BOULOS zwischen Sonchus und Taeckholmia unterscheiden sollen, eine neue Art, die kürzlich auf der Insel La Gomera gefunden wurde, Sonchus wildpretii U. & A. REIFENBERGER (REIFENBERGER 1992), sowohl der ersten als auch der zweiten Gattung zuordnen, wodurch diese Gattungstrennung unhaltbar wird.

Dieser Einschluß in die Gattung Sonchus von Arten, die durch BOULOS der Gattung Taeckholmia zugeteilt wurden, macht eine Emendation der Untergattung Dendrosonchus SCH. BIP. ex BOULOS erforderlich.
Carpelloid stamens in Papaveraceae JUSS. and Brassicaceae BURNETT(Cruciferae JUSS.) and their bearing on theories of gynoecium organization
Authors: Brückner C.
Published: August 2010

A rather frequent floral abnormality is the homeotic replacement of stamens with free carpelloid organs. This phenomenon is caused by spontaneous or experimentally induced recessive mutations. The morphology of carpelloid stamens in Papaveraceae and Brassicaceae taxa is described on the basis of the author's observations as well as literature analysis. The number of carpels constituting the gynoecia of these families has been much debated. One widely accepted theory claims that carpel number equals the number of placental regions (at least two—bicarpellary theory). Other hypothesis consider pistils with two placental regions to be formed by four carpels (tetracarpellary theory) or even six carpels (hexacarpellary theory). Also an “acarpellate” condition with the paracarpous gynoecia being intercalary tubes topped by carpel rudiments was postulated. The structure of carpelloid stamens, however, strongly indicates that the classical bicarpellary theory can sufficiently explain the organization of papaveraceous and cruciferous gynoecia. The features that seemingly gave hints for double or triple numbers of carpels are already displayed by a (theoretical or real) combination of two gynoecial units which are represented by perfectly carpelloid stamens.
Epidermal morphology of the genus Dialium (Fabaceae: Caesalpinoideae)
Authors: Sheteolu A. O. , Ayodele A. E.
Published: August 2010

Epidermal morphology of adaxial and abaxial leaflet surfaces of the five species in the genus Dialium (Fabaceae: Caesalpinoideae) were studied by light microscopy. The epidermises are composed of cells which are isodiametric, irregular or both types in outline. Anticlinal walls are either straight, curved or undulate. Leaflets of all taxa are hypostomatic. Paracytic stomata occur in all species except D. guineense that posses both paracytic and staurocytic stomata. Other features of the epidermis that show variation include stomatal size and density, size and density of epidermal cells, and type, size, shape, frequency and basal cells of the trichomes. An indented, dichotomous key for identifying the species is presented.
Die Entwicklung von Pflanzengesellschaften auf entblößten Ruderalstandorten im LSG Křivoklátsko (Mittelböhmen). Anwendung eines Algorithmus zur deduktiven syntaxonomischen Klassifizierung
Authors: Dostálek J.
Published: August 2010

Die Arbeit stellt eine in der Praxis erprobte Methode eines Algorithmus zur deduktiven syntaxonomischen Klassifizierung am Beispiel von Pflanzengesellschaften vor, die sich auf entblößten Ruderalstandorten im Landschaftsschutzgebiet Křivoklátsko (Mittelböhmen) entwickeln. Mit Hilfe dieses Algorithmus wurden die analysierten Pflanzengesellschaften den Einheiten des phytozönologischen Systems zugeordnet. Für jede Gesellschaft ist der Prozentanteil von einzelnen Systemeinheiten bei ihrer syntaxonomischen Schätzung angeführt.

Auf diese Weise wurden Gesellschaften mit den dominierenden Arten Atriplex nitens, A. patula, Bromus sterilis, Chenopodium ficifolium, Ch. glaucum, Ch. suecicum, Descurainia sophia, Malva neglecta, Matricaria maritima subsp. inodora und Puccinellia distans sowie auch andere auf entblößten Ruderalstellen vereinzelt vorkommende Gesellschaften ausgewertet. Im Text werden die Stellung dieser Gesellschaften im phytozönologischen System, ihre Synökologie und Verbreitung im Untersuchungsgebiet beschrieben.
Taxonomic position of Vermifrux abyssinica (A. RICH.) GILLETT and taxonomy of the tribe Loteae s.l. (Papilionaceae)
Authors: Tikhomirov V. N. , Sokoloff D. D.
Published: August 2010

The comparison between Vermifrux abyssinica (A.RICH.) GILLETT and other members of Loteae tribe demonstrates that this species is most similar to Dorycnopsis gerardii (L.) BOISS. The idea of the affinity of V. abyssinica with the species Lotus subgen. Syrmatium is not confirmed. V. abyssinica and D. gerardii differ from the genus Lotus as well as from the genus Anthyllis not less than Anthyllis differs from Lotus. On the other hand the distinctions between V. abyssinica and D. gerardii do not exceed the differences between species within the genus Lotus, so there are reasons to join the genera Vermifrux and Dorycnopsis. The new combination Dorycnopsis abyssinica (A.RICH.) V.TICHOM. & D.D.SOKOLOFF and the corrected description of the genus Dorycnopsis are given.
Carotenoids in lichens from the United States of America and Mexico
Authors: Czeczuga B. , Ryan B. D. , Spjut R. W. , Flock J.‐A. W. , Weber W. A. , Beasley C. W. , Showman R. E. , Worthington R. D. , Boucher V. L.
Published: August 2010

Column and thin‐layer chromatography revealed the presence of the following carotenoids in the thalli of 106 lichen species (122 specimens) from United States and Mexico: α‐carotene, β‐carotene, ε‐carotene, γ‐carotene, β‐cryptoxanthin, β‐isocryptoxanthin, rubixanthin, lutein, 3′‐epilutein, zeaxanthin, β‐carotene diepoxide, eschscholtzxanthin, lycopene‐5,6‐epoxide, alloxanthin, physalien, lutein epoxide, antheraxanthin, echinenone, 3′‐hydroxyechinenone, canthaxanthin, idoxanthin, α‐doradexanthin, astaxanthin, neoxanthin, microxanthin, heteroxanthin, siphonein, violaxanthin, mutatoxanthin, aurochrome, auroxanthin, luteoxanthin, neochrome, cryptoflavin, flavoxanthin, rhodoxanthin, capsochrome, apo‐6′‐lycopenal, β‐apo‐10′‐carotenal, 3‐hydroxy‐β‐apo‐10′‐carotenal, bixin, β‐citraurin, azafrin, crocetindial and semi‐α‐carotenone.

The total content of carotenoids ranged from 10.9 (Peltigera collina) to 93.0 μg g−1 dry weight (Peltigera canina No. 71).
Life strategy systems of xerothermic grasslands – mechanisms of reproduction and colonization within Stipetum capillatae s.l. and Adonido – Brachypodietum pinnati
Authors: Hensen I.
Published: August 2010

Life strategy systems of two xerothermic grassland types (Stipetum capillatae s.l., Adonido‐Brachypodietum pinnati) were studied. Five different life strategies are established. A detailed weighted analysis based on the Mean group quantity fraction shows that mainly the community‐specific soil water conditions effect a different significance of predominant colonization and reproduction mechanisms.

Within both communities, Perennial stayers of hemicryptophytic life form are best adapted to this habitat. The most important life strategy within the summer‐dry Stipetum capillatae s.l. is that of Perennial stayers with long‐ and short‐range dispersal, with sexual reproduction (PTEs). Site colonization and maintenance takes place through generative, long‐ and short‐range dispersed diaspores, with clonal reproduction having a lower significance.

By contrast, within Adonido‐Brachypodietum pinnati characterized by more moderate water conditions, Perennial stayers with long‐ and short‐range dispersal, with clonal reproduction (PTEcl) clearly dominate. Habitat is maintained by vegetative dispersal, and generative diaspores are produced infrequently.

Within the grassland communities, there is a strong tendency towards short‐range dispersal. Yet, within Stipetum capillatae, polychorous species characterized by additional adaptations of epizoochorous long‐range dispersal, are biologically significant as well. From the results of the present analysis, different measures of habitat conservation can be derived.
Neue paläofloristische Funde aus kontinentalen und brackischen Tertiärformationen in Bulgarien
Authors: Mai D. H. , Palamarev E.
Published: August 2010

Aus verschieden alten Fundstellen im Tertiär Bulgariens werden für die fossile Flora Bulgariens neue Arten der Gattungen Picea, Illicium, Trigonobalanopsis, Fagus, Pterocarya, Phellodendron, Halesia, Toddalia, Rutaspermum, Swida, Paliurus, Itea, Potamogeton und Cladium auf Grund karpologischer Funde mitgeteilt. Es wird auch eine neue Cladiocarya‐Art (C. maxima sp. nova) beschrieben. Neu für die Balkanhalbinsel‐Flora ist der Nachweis der Gattungen Trigonobalanopsis, Halesia, Phellodendron, Toddalia, Rutaspermum und Illicium. Die Funde sind von vegetations‐ und klimageschichtlicher Bedeutung in der Balkan‐Region.
Zwei neue Unterarten des Hordeum murinum (Gramineae) aus Griechenland und Spanien
Authors: Scholz H. , Raus Th.
Published: August 2010

Hordeum murinum subsp. setariurum und H. murinum subsp. montanum. wahrscheinlich Lokalendemiten in Griechenland (Flachland) bzw. in Spanien (Bergland), sind neu für die Wissenschaft. Sie sollten bei zukünftigen Untersuchungen über die Unkrautevolution des H. murinum berücksichtigt werden. Ein neuer Schlüssel für die Bestimmung der infraspezifischen Sippen des H. murinum wird vorgelegt.
Setchelliogaster rheophyllus comb. nova (Bolbitiaceae, Agaricales) – an Iberic and North African fungus species
Authors: Moreno G. , Kreisel H. , Galán R.
Published: August 2010

Setchelliogaster rheophyllus, comb. nova, is described and illustrated. The species originally described from North Africa as Naucoria was confused in Spain with S. tenuipes. It is interesting for its systematic position between agaricoid and secotioid Basidiomycetes. It fruits in winter in humus of Eucalyptus globulus in allochthonous affore stations in Asturias and Vizcaya in northern Spain. The genus Setchelliogaster is interpreted as a secotioid member of the Bolbitiaceae.
Ein neues fossiles Holz, Juniperoxylon wagneri sp. nova, aus der miozänen Braunkohle von Wetro (Oberlausitz/Sachsen, Deutschland)
Authors: Süss H. , Rathner U.
Published: August 2010

Ein fossiles Holz aus dem oberen Untermiozän der Braunkohle von Wetro (Oberlausitz/Sachsen, Deutschland) wurde untersucht und als Juniperoxylon wagneri sp. nova beschrieben. Die bisherigen Erkenntnisse über fossile Hölzer mit Juniperoxylon‐Struktur werden in einem der Arbeit vorangestellten Kapitel diskutiert.
New taxa and notes on Allium subgenus Rhizirideum (Alliaceae) in Turkey
Authors: Friesen N. , Özhatay N.
Published: August 2010

A taxonomic revision of the smallest subgenus of Allium in Turkey (subgen. Rhizirideum) is presented including a key, synonymy and distribution of all taxa. A total of eight species is recognized and grouped into five sections including one new species A. pseudoalbidum.
Der Bauplan der Blüte und ihres Gefäßbündelsystems bei den Mesembryanthemen
Authors: Volgin S. A.
Published: August 2010

Morphologische und gefäßbündelanatomische Untersuchungen der Blüte von Aptenia cordifolia (L. f.) SCHWANT. und Delosperma echinatum (LAM.) SCHWANT. haben gezeigt, daß ein Bauplan der Blüte bei den Mesembryanthemen als solcher beschrieben werden kann, für den ein mit der primären einfachen Blütenhülle homologer Kelch und ein Kreis den Kelchblättern gegenüberliegende Karpelle charakteristisch sind. Zwischen beiden Kreisen befindet sich eine Androeceumzone, die eine primär unbestimmte Zahl von staminodialen Kronblättern und Staubblättern in mehr oder weniger gleichmäßiger Anordnung besitzt. Die Verkürzung der Blütenontogenie kann zur Ausbildung alternisepaler Staminalgruppen und einzelner Stamina führen. Das Gynoeceum hat stark entwickelte Apikalsepten und mit ihnen alternierende falsche Scheidewände. Der untere Teil des Ventralspalts ist in einen zylindrischen Kanal umgewandelt. Das Gefäßbündelsystem ist meist aus den Spursträngen der appendikulüren Blütenteile aufgebaut. Die anatomischen Karpellnodien befinden sich auf dem Niveau des Ovarbodens. Es gibt keine anatomischen Hinweise auf eine axiale Natur der Ovarwand. Die Entstehung der Epigynie ist nicht mit der Verschiebung der Plazenten an die Ovarwände verbunden, die Verschiebung selbst ist nicht, durch die Veränderung der Proportionen des Blütenbodens verursacht. Ein solcher Bauplan schließt direkte verwandtschaftliche Beziehungen zwischen Aizoaceae und Cactaceae aus.
Root anatomy of palms IV. Arecoideae, part 1, general remarks and descriptions on the roots
Authors: Seubert Elke
Published: August 2010

This survey of palm roots, initiated with the Coryphoideae, and followed by Calamoideae, Ceroxyloideae, Nypoideae with the only genus Nypa and Phytelephantoideae is now completed with the studies on the roots of Arecoideae. Representatives of 101 genera of the 123 genera accepted by UHL & DRANSFIELD 1987 have been available. Within the subfamily, there is considerable variation in root characters. In general, roots do not differ or but slightly between species of a single genus, but do so conspicuously between the genera, subtribes, and tribes. They therefore contribute both to distinguish genera and to recognize natural units of genera, and indicate affinities between higher categories.

Archontophoenicinae, Arecinae, and Iguanurinae have much in common and are obviousely related. According to root anatomy, Cyrtostachys is clearly a member of Archontophoenicinae. Dypsidinae are considered transitional between Linospadicinae, Ptychospermatinae, and Archontophoenicinae; whereas Oncospermatinae show affinites to Iguanurinae, but share also characters with Butiinae. Butiinae fall into two groups; one approaching Attaleinae and Elaidinae, the other one mainly characterised by reduction of root features. The character state, found within Bactridinae sets them apart from the rest of Cocoeae, but show some affinities to Caryoteae; this may be due to parallelism. Podococceae are considered related with Reinhardtia (Malortieinae) and Iriarteae, the latter with several characters in common with Caryoteae. As the roots of Oraninae are reduced, and most features are wanting, it is doubtful if they are closer to Areceae or Podococceae. In any case, they have more in common with the Podococceae and Malortieinae than with the rest of Areceae. Euterpeinae and Roystoneae are similar in root anatomy, and thus considered closely related. Geonomeae have little in common with the rest of the subfamily, but approach Phytelephantoideae.
Alien plants in Czech village flora: An analysis of species numbers
Authors: Pyšek P.
Published: August 2010

Flora of 42 villages located at the territory of the Czech Republic between 12–16 °E and 49–51 °N was analysed to (1) quantify the proportion of archaeophytes (i.e. aliens introduced before 1500), neophytes (aliens introduced after that date) and native species, and (2) assess the factors affecting the representation of these particular groups. Alien species constitute on average about one third of the species present in the flora of a Czech village, archaeophytes contributing 17.8% (32.3 species), neophytes 14.4% (26.8 species). Number and proportion of archaeophytes increased with village size and decreased with its altitude, native species were correlated with neither factor. Village size, expressed as the number of houses, and the distance from a middle‐sized town were the significant predictors explaining nearly 50% of variation in number of neophytes. There was also an effect of geographical region in which a village was located on the representation of neophytes. Neither the richness nor the proportion of neophytes in village floras were correlated with the distance from a small town or that from railway, nearest river and main road.
Wadi vegetation of the North‐Eastern desert of Egypt
Authors: Fossati J. , Pautou G. , Peltier J. P.
Published: August 2010

The spatial structure of the wadi vegetation of the North‐eastern Desert of Egypt was analyzed on a regional scale (30° 10′ N to 26° 10′N and 30°50′ E to 32°30′ E). The site covers 400 km from north to south and 150 km from west to east.

Phytosociological relevés selected from published papers were added to authors' relevés from the Wadi Sannur. The analysis of the distribution of perennial species was based on 237 relevés. Four communities identified were described in relation to two climatic gradients, the first of which, the north/south gradient, is characterized by decreasing annual precipitations and an increasing mean annual temperature. The second, the north‐west/south‐east, presents an increase in the annual potential of evapotranspiration. A third gradient, a biogeographical one this time, exerts an important role in the floristic composition. The whole of the eastern Desert is dominated by the Saharo‐Arabian species but as one moves northward, the proportion of the Mediterranean taxa increases. Some Sudano‐Angolan taxa also appear in the southern part.
Vegetation pattern along an edaphic and climatic gradient in the Southern Eastern Desert of Egypt
Authors: Sheded M. G.
Published: August 2010

Vegetation analysis of the Aswan–Allaqi road in the Southern Eastern Desert of Egypt indicates the dominance of Morettia philaeana, Aerva javanica, Fagonia indica, Salsola imbricata, Pulicarica crispa, Crotalaria aegyptiaca, Lotononis platycarpa, Citrullus colocynthis, Pulicaria incisa, Astragalus vogelii and Zygophyllum simplex. Four vegetation clusters are recognized after the application of the Two‐Way Indicator Species Analysis (TWIN‐SPAN). These clusters are named after the dominant species as follows: Fagonia indica – Aerva javanica, Salsola imbricata – Zilla spinosa, Salsola imbricata – Morettia philaeana and Salsola imbricata – Aerva javanica. Among the estimated soil variables in the present study, silt, clay, pH, EC, HCO3, CI−, and Ca2+ are important in characterizing the vegetation clusters.
Zwei neue Rubus‐Arten aus Mittel‐ und Ostdeutschland
Authors: Weber H. E.
Published: August 2010

Zwei neue Brombeerarten (Rubus subgen. Rubus sect. Corylifolii LINDLEY) aus Deutschland sind beschrieben: (1) Rubus stohrii H. E. WEBER & RANFT (ser. Subthyrsoidei [FOCKE] FOCKE), regional häufig in Brandenburg, Berlin, Sachsen‐Anhalt und Sachsen, zerstreut bis selten in Thüringen und Bayern; (2) R. glossoides H. E. WEBER & STOHR (ser. Subradula W. C. R. WATSON) mit lokal häufigen Vorkommen in Sachsen‐Anhalt und dem angrenzenden Brandenburg. Die Arten sind durch Fotos ihrer Holotypen illustriert. Listen exemplarischer Belege sind beigefügt.
Berberis lycium Royle complex in India
Authors: Husain T. , Rao R. R. , Garg A.
Published: August 2010

The paper enumerates four varieties of Berberis lycium ROYLE. Morphological, distributional, leaf epidermal and pollen morphological data have been appended to show that the varieties – lycium, subfascicularis AHRENDT, simlensis AHRENDT and subvirescens AHRENDT are distinct.
Bislang nicht typisierte Namen von Rubus‐Arten in Mitteleuropa
Authors: Weber H. E.
Published: August 2010

Die bislang nicht typisierten Namen der in Mitteleuropa vorkommenden Brombeerarten sind, soweit möglich, typisiert: Insgesamt sind 25 Lectotypen ausgewählt, außerdem vier Neotypen, die am locus typicus gesammelt oder vom Autor nach Publikation seines betreffenden Namens entsprechend beschriftet wurden. Zusätzlich sind einige Synonyme und infraspezifische Taxa typisiert. Bei Rubus cimbricus FOCKE konnte bislang nur ein Iso‐Syntypus gefunden werden, und von R. loehrii WIRTGEN sind nur Syntypen bekannt, die wenig instruktives und daher zur Lectotypisierung nicht verwendbares Material enthalten. Ein Holotypus R. gremlii FOCKE wurde noch nicht wiederentdeckt. Rubus godronii LECOQ & LAMOTTE und R. mougeotii BILLOT wurden nicht typisiert, doch ist die Anwendung auch dieser Namen durch authentisches Material gesichert.
The beech (Fagus L.) in western Eurasia–an actualistic approach
Authors: Denk Th.
Published: August 2010

Floristic investigations in the western Eurasian area of Fagus L. were carried out to provide a basis for comparison with European Late Tertiary plant assemblages containing Fagus. Beech turned out to be part of polydominant forests in marginal regions of its range. It is of interest that Fagus occurs together with a number of evergreen species not only in the well known Tertiary relict areas of Northern Turkey and western Georgia, but also in Southwestern Europe. Coastal stands in the Georgian Colchic area with high atmospheric humidity turned but to be most significant for the actualistic approach. Small‐scale mosaic patterns of distinct vegetation units could be observed. They are caused by differences in soil drainage and fluctuating ground water levels. Such conditions are supposed to be very similar to Neogene vegetation types reflected in the fossil record.

Spontaneous spreading of exotic plants in Georgian mixed broadleaved evergreen forests but also in southern Switzerland demonstrates the abundance of free niches in contemporaneous broadleaved forests. Climates with evenly distributed high amounts of annual precipitation and no severe winter and late frosts seem to favour such phenomena.

Monodominant beech forests are derived vegetation types of the postglacial period and occur throughout the whole area of Fagus in western Eurasia.
The genus Pterocephalus (Dipsacaceae) in Morocco
Authors: Peris J. , Romo A. , Stübing G.
Published: August 2010

In Morocco the genus Pterocephalus ADANS. (Dipsacaceae) is represented by two species: Pterocephalus depressus COSSON & BALANSA, endemic in the Grand Atlas and Pterocephalus kunkelianus PERIS, ROMO & STÜBING sp. nova, endemic in the central part of the Rif mountains. Information on the nomenclature, morphology, ecology and distribution of both taxa in Morocco is given here and original illustrations are also included.