bluuebunny/crossref_metadata_2025 huggingface dataset:
Histochemical studies in the leaves of some Dioscorea L. (Dioscoreaceae) and the taxonomic importance
Authors: Edeoga H. O. , Okoli B. E.
Published: August 2010

Histochemical studies on the localization of calcium oxalate crystals and other ergastic substances in the leaf of ten species of Dioscorea L. (Discoreaceae) were carried out. There are clear variations both in the positions and shapes (types) of calcium oxalate crystals and other ergastic substances found in the leaf of these Dioscorea species. D. rotundata POIR. have highly elongated, missile‐like raphides in addition to their calcium oxalate crystals. D. minutiflora ENGL. is diagnostic in possessing raphide even at the base of the trichome whereas D. odoratissima PAX has ‘needle‐like’ raphide in addition to crystals. ‘Barrel‐shaped’ raphide bundles were localized in the leaf of D. smilacifolia DEWILD. and D. minutiflora. In the same vein, D. esculenta (LOUR.) BURKILL, and D. bulbifera L. have crystals and raphides even inside the chloroplasts. Apart from the crystals and raphides, most of these Dioscorea species are also taninferous as can be seen in the leaves of D. preussii PAX, D. rotundata, D. esculenta and D. bulbifera. The presence of raphides and crystals at the base of trichome and inside chloroplasts are being reported for the first time in these taxa. Moreover, variation in the localization of the crystals and the raphides in different parts of the leaf suggests other role of these ergastic substances in the taxa other than storage.
Floristic composition of Wof‐Washa natural forest, Central Ethiopia: Implications for the conservation of biodiversity
Authors: Teketay Demel , Bekele Tamrat
Published: August 2010

Wof‐Washa forest is one of the very few remaining natural forests in Ethiopia. It is the only stretch of forest left in the surrounding. The main reason for its survival is its inaccessibility. The local people use the forest as a source of fuelwood, construction material, farm implements, edible fruits, honey, medicinal plants, water and game for hunting. As one of the major activities of the local people is livestock production, it provides grazing areas. Since the forest has not been commercially exploited, it is a potential source of merchantable forest products. It also provides food, shelter and breeding areas for many wild animals. The forest prevents soil erosion and regulates the watershed in the surrounding. However, the threat to its destruction is becoming apparent because of encroaching agriculture, cutting of trees by the local people, fire and overgrazing. Studies on the floristic composition of the forest were made in 1992 to lay the foundation on which recommendations for future conservation of biodiversity and development of the forest can be made. The studies revealed that there are over 252 species of plants: 33 (13%) trees, 18 (7%) shrubs and 201 (80%) herbs. Among these, 29 species (12%) are endemic to Ethiopia while 7 (3%) are nearly endemic. The floristic composition of the forest is compared with other forests both inside and outside Ethiopia. The most similar forests analysed have only about 54% species in common with Wof‐Washa forest. The forest is endowed with a remarkable number of common, rare and endemic plant species and wild animals. Many of the species are habitat specific and can only be found in limited areas in the forest. Their survival depends upon the existence of the forest. Any kind of man‐made disturbance which does not take into account this reality is very likely to destroy the specific habitats of the species and to upset the natural processes which will in turn result in local extinction of both plant and animal species. Moreover, it will reduce the amount of available water in the lowlands and accelerate soil erosion on the highlands. Based on the results of the present study. it is recommended that the forest be converted into a National Nature Reserve.
Rumex bolosii – eine neue endemische Art aus dem Rif‐Gebirge (Marokko)
Authors: Stübing G. , Peris J. B. , Romo A.
Published: August 2010

Aus dem Rif‐Gebirge (Marokko) wird eine neue An der Gattung Rumex L. (R. bolosii) beschrieben.
Les Ptéridophytes des Iles Wallis et Futuna (Pacifique Sud) écologie et répartition
Authors: Badré F. , Hoff M.
Published: August 2010

Le nombre total d'espèces de Ptéridophytes des Iles Wallis et Futuna s'élève à 59. Ces espèces se répartissent dans 35 genres. L'écologie générate et les répartitions locale et mondiale de chaque espèce sont précisées.
Ecological groups of macrofungi in beech forests on Czȩestochowa Upland, Southern Poland
Authors: Adamczyk J.
Published: August 2010

In the years 1987–1991 ecological studies on macromycetes were performed in 27 permanent sampling plots (150–400 m2) established in four beech forest associations growing in the northern part of Czestochowa Upland (southern Poland): Dentario enneaphyllidis‐Fagetum, Carici‐Fagetum, Luzulo pilosae‐Fagetum and Melico‐Fagetum. The plots were located in 3 forest reserves, Zielona Góra, Parkowe and Sokole Góry, situated on hills of Upper Jurassic limestones. A total of 105 macrofungi species fructifying permanently on the substrate connected with Fagus sylvatica were selected for detailed analysis. The species were assigned to 12 niche‐substrate type ecological groups (ARNOLDS 1988), comprising macrofungi growing on the ground, in the litter layer and on beech wood.

The contribution of given niche‐substrate ecological groups to given association of the investigated beech forests was studied. Results of the respective analysis are presented in the form of radial multiaxial diagrams, in which each axis represents one nichesubstrate group and each section of an axis represents one species. The applied method enabled estimating mycological similarity of the investigated associations.
Die Organisationseinheit als Bezugselement für die Strukturanalyse von verholzenden Sproßsystemen
Authors: Froebe H. A. , Gleissner P.
Published: August 2010

Gesucht wird eine natürliche organogenetische Einheit oberhalb der ‚Phyton‐Ebene’︁, um die ausdauernden Sproßsysteme verholzender Gewächse auf Übereinstimmungen ihrer Gefügesysteme analysieren zu können. Diese Einheit ist längst bekannt, nur kann man das nicht bemerken, weil sie unter verschiedenen Namen in die Literatur eingeführt wurde und ihre Beschreibungen mehr als lückenhaft sind: ‚unit of extension’︁ ‚unit of morphogenesis’︁, und ‚module’︁ (HALLÉ et al. 1978). Eine Synthese dieser drei Einheiten ergibt die gesuchte Einheit. Wir nennen sie Organisationseinheit (OE). Sie ist der Komplex von sechs Sproßmerkmalen, die jeweils einen Gradienten auf einem (sich wiederholenden) Sproßabschnitt ausbilden: (1) das Muster der Internodienlängen; (2) die seriale Förderung (Längengradient der Seitenachsen 1. Ordn.); (3) den Differenzierungsgradienten der Seitenachsen 1. Ordn.; (4) den Gradienten der Zweigablösung; (5) Heterophyllie (Niederblatt – Laubblatt); (6) den Aktivitätsgradienten der Achselmeristeme. Die Positionen (1)–(6) stellen ein Maximalprogramm der OE dar, was nicht in jedem Taxon bzw. in jedem Metamorphosestadium der verschiedenen Altersphasen des einzelnen Baums erfüllt sein muß (z. B. Aesculus, Carpinus).

Die Rolle potentieller Störfaktoren, die den Aufbau der OE verändern könnten, wird untersucht: (a) Die Infloreszenz kann die Innovation aus ihrer (vegetativ) terminalen Stellung verdrängen (z. B. Aesculus). Das ist zwar ein starker Wechsel im Gefüge, doch bleiben die vegetativen Merkmale der OE alle erhalten. (b) Sowohl Johannistriebe als auch sylleptische Triebe werden als eigene OEs aufgefaßt, weil das Muster der OE nicht zeitbezogen ist (z. B. Fagus). (c) Die Zweigablösung ist keineswegs irregulär, sondern ergreift zuerst die schwächsten und dann die stärksten Seitenzweige, womit sie dem Muster der OE folgt (z. B. Quercus sp.). (d) Reïteration ist die Fähigkeit, aus schlafenden Knospen neue Triebe zu bilden. Da die schlafenden Knospen grundsätzlich in proximaler Position an der OE stehen, ist die Position der reïterativen Zweige vorgegeben (z. B. Tilia). (e) Umweltschäden beeinträchtigen die Ausbildung der OEs in der Form einer graduellen Abschwächung je nach Schweregrad der Schädigung. Das OE‐Muster wird als solches davon aber nicht verändert.
Blüten und Blütenbesucher bei Onosma (Boraginaceae – Lithospermeae)
Authors: Teppner H.
Published: August 2010

Onosma hat Röhrenblumen mit einem meist in der Röhre eingeschlossenen Streukegel. Im Grunde der Kronröhre sammelt sich der von einem Diskusnektarium abgeschiedene Nektar. Der Pollen aus dem Streukegel kann entweder durch verschiedene Manipulationen, z. B. mittels der Mandibel und Vorderbeine, oder durch Vibrationssammeln ausgebeutet werden. In Onosma‐Kulturen in Mitteleuropa sind Anthophora acervorum‐Weibchen und Arbeiterinnen verschiedener Bombus‐Arten die wichtigsten Bestäüber. In Nordgriechenland erwies sich besonders die oligolektisch an Onosma gebundene Osmia apicata als häufiger und regelmäßiger Bestäüber die Weibchen sammeln ohne Vibration. Bei Chalicodoma parierina‐ und Anthophora biciliata‐Weibchen wurde ebenfalls keine Vibration beobachtet. Vibrationssammeln betreiben dagegen Cubitalia morio‐Weibchen, über deren Verhalten nichts bekannt war; sie sind offensichtlich ebenfalls oligolektisch an Onosma gebunden. Die untersuchten Onosma‐Arten waren O. helvetica BOISS., O. heterophylla GRISEB. und O. stojanoffi (TURILL) TEPPNER comb. nov.
The genus Handkea KREISEL (Basidiomycetes, Lycoperdaceae) in the southern hemisphere
Authors: Kreisel H. , Moreno G.
Published: August 2010

Lanopila capensis C. G. LLOYD from South Africa is combined as Handkea capensis (C. G. LLOYD) comb. nova. Handkea utriformis is known from several places in Fireland and southern Chile. The genus Handkea has a characteristic bizonal disjunct distribution.
Three nannandrous species of Oedogonium LINK (Chlorophyceae, Oedogoniales) from Bihar, India
Authors: Mahato A. K. , Mahato Pushpa
Published: August 2010

The present communication deals with decription and systematic enumeration of three nannandrous species of Oedogonium. These are: Oe. concatenatum (HASS.) WITTR, emend. HIRN var. seruensis GAUTH,‐LIÈV., Oe. donnellii WOLLE var. donnellii, and Oe. wolleanum WITTR. var. wolleanum f. wolleanum. Of these two species, Oe. concatenatum var. seruensis, and Oe. donnellii var. donnellii are new to India, and all three taxa are new records for Bihar.
Diphasiastrum oellgaardii (Lycopodiaceae, Pteridophyta), a new lycopod species from Central Europe and France
Authors: Stoor A. M. , Boudrie M. , Jérǒme C. , Horn K. , Bennert H. W.
Published: August 2010

A Diphasiastrum taxon being morphologically intermediate between D. alpinum and D. tristachyum is described as D. oellgaardii. During gel isoenzyme analyses, glucose‐6‐phosphate isomerase and esterase turned out to be electrophoretic markers testifying the hybrid origin of D. oellgaardii. In Europe, where three parental species (D. alpinum, D. complanatum and D. tristachym) occur, D. oellgaardii is the third taxon of hybrid origin besides D. issleri and D. zeilleri. Problems of reproductive biology of these taxa are discussed.
A new species of Audouinella from Kerala, India
Authors: Shaji C. , Panikkar M. V. N.
Published: August 2010

Audouinella quilonensis a new species belonging to the order Acrochaetiales (Rhodophyta) is described from Kerala. It differs from its congenera in its morphological characters as greater dimensions, basal system of well developed rhizoids and in having single type of monosporangia which are born solitary or in groups of two or four on laterals of limited growth. It reproduces only by monospores formed singly in sporangia.
Studies in the Ericaceae (Ericoideae) XIX. Two new species of Erica from southern Africa
Authors: Oliver E. G. H. , Oliver I. M.
Published: August 2010

Two new species are added to the large genus Erica, E. roseoloba and E. saptouensis. They are both taxonomically isolated species and are restricted endemics, occurring at high altitudes on the mountains in the southern part of the Cape Region of South Africa.
Root anatomy of palms III. Ceroxyloideae, Nypoideae, Phytelephantoideae
Authors: Seubert E.
Published: August 2010

Summary

The root‐anatomy of representatives of nine genera of Ceroxyloideae of the eleven genera accepted by UHL& DRANSFIELD(1987), ofNypa, the onliest genus of Nypoideae, and of all three genera of Phytelephantoideae have been studied. In Coryphoideae and Calamoideae every genus can be distinguished by the anatomy of the roots, whereas within one genus the species do not differ but slightly. This is true for the newly examined genera too and contributes both to define and identify the genera and towards an improved understanding of the relationship between genera and subfamilies. The genera of Ceroxyloideae are obviously related, they form a natural group, and even the somewhat isolatedPseudophoenixis well at home here. BothNypaand Phytelephantoideae do not exhibit any affinities with other palms studied up to now.
A partial revision of the tribe Massonieae (Hyacinthaceae) 1. Survey, including three novelties from Namibia: A new genus, a second species in the monotypic Whiteheadia, and a new combination in Massonia
Authors: Müller‐Doblies Ute , Müller‐Doblies Dietrich
Published: August 2010

The tribe Massonieae with about 150 species in 15 genera is subendemic to southern Africa (Namibia, South Africa, Lesotho, and Swaziland) radiating with two genera into tropical East Africa and one of them to S Asia. Two of these 15 genera, Periboea and Resnova, are formally resuscitated in the present paper. Four genera are known from Namibia, to which Namophila urotepala gen. et sp. novae is added.

The hitherto green‐flowered genus Whiteheadia is no longer monotypic: the white‐flowered W. etesionamibensis with distinctly longer perigon‐segments and with many other minor differences is described from several localities in Diamond Sperrgebiet no. 1 and surrounding areas eastwards to the Hunsberge.

The only Massonia known from Namibia (MERXMÜLLER & ROESSLER 1973) is not M. echinata but a species of its own which deserves a new combination: M. sessiliflora; it also occurs in the Cape, namely on the southern bank of the Orange River.

Massonieae as a whole are subdivided into three subtribes. A key to the subtribes, keys to the genera within the subtribes, and in several genera with important changes also keys to the species are provided. Fourteen species of southern Africa are resucitated from synonymy: in Resnova (4, incl. one comb. nova), Drimiopsis (1), Massonia (6, incl. the above species from Namibia), Periboea (1, a new combination), and Polyxena (2); as two accepted species proved to be younger synonyms (Drimiopsis maxima and Neobakeria heterandra) the increase in species by reinstatements is reduced to 12. Seven new species are proposed in addition to the two Namibian ones: in Periboea (P. oliveri), in Polyxena (P. calcicola). and in Drimiopsis (D. comptonii, D. davidsoniae, D. pusilla, D. reilleyana, and D. stolonissima). For tropical East Africa three new combinations (altogether six) are proposed, Ledebouria hildebrandtii. L confertiflora, and Drimiopsis fischeri which are transferred from other genera.
Wechselwirkungen zwischen bodenphysikalischen Parametern, Grundwasserdynamik und der Vegetationszusammensetzung in unterschiedlich stark genutzten Niedermoor‐Ökosystemen
Authors: Schrautzer J. , Trepel M.
Published: August 2010

In dieser Arbeit werden für unterschiedlich stark degenerierte Niedermoor‐Ökosysteme Zusammenhänge zwischen der Grundwasserdynamik, der Nutzungsform und ‐ intensität und der Vegetationszusammensetzung aufgezeigt. Anhand von Datensätzen aus Schleswig‐Holstein wird die Degeneration artenreicher Calthion‐Feuchtwiesen zu artenarmen Feuchtweiden des Lolio‐Potentillion als Folge der zunehmenden Nutzungsintensivierung während der letzten Jahrzehnte dokumentiert. Die Ergebnisse zeigen, daß für den Verlust von Feuchtwiesen‐Arten in den untersuchten Niedermooren mehrere Ursachen – Entwässerung, Düngung, Nutzungsumstellung von Mahd auf Beweidung – verantwortlich sind. Neben den direkten (Fraß, mechanische Trittbelastung) und indirekten (Bodenverdichtung) Einflüssen der Beweidung wirken vor allem die Folgen der Entwässerung auf das Konkurrenzgeschehen in Feuchtwiesen. In diesem Zusammenhang werden besonders die Auswirkungen der durch Entwässerung hervorgerufenen und durch Beweidung verstärkten bodenphysikalischen Veränderungen der Torfstruktur auf die Grundwasserdynamik diskutiert. Die Ergebnisse machen klar, daß eine eindeutige Trennung der Ursachen für die floristischen Veränderungen letztlich nicht möglich ist. Es ist vielmehr von einer synergistischen Wirkung des gesamten Faktorenkomplexes auszugehen. Abschließend werden die untersuchten Niedermoor‐Standorte hinsichtlich ökosystemar begründeter Qualitätsziele bewertet und daraus Konsequenzen für die Naturschutzpraxis abgeleitet.
Eine Übersicht über die fossilen Tilia‐Hochblätter Rumäniens und einige Bemerkungen über die Nomenklatur der europäischen Tilia‐Hochblätter
Authors: Givulescu R.
Published: August 2010

Im Rahmen einer Übersicht der Tilia‐Hochblätter Europas stellt der Verfasser im ersten Teil die aus Rumänien beschriebenen Reste vor, im zweiten Teil werden Hochblätter aus Europa besprochen. Hierbei ergeben sich zwei Gruppen: einerseits Hochblätter, denen Stiel und Fruchtstiel fehlen (vom Typ Tilia longebracteata ANDRAE), andererseits solche mit Stiel und Fruchtstiel. Die These von nur einer Tilia‐Art im Mio‐Pliozän Europas kann nicht bestätigt werden.
Carotenoids in terrestrial, epilithic and epiphytic lichens from Venezuelan Andes
Authors: Czeczuga B. , Mèndez A. Morales , Lopèz‐Figueiras M.
Published: August 2010

Column and thin‐layer chromatography revealed the presence of the following carotenoids in the thalli of 125 lichen species from Venezuelan Andes: α‐carotene, β‐carotene, β‐cryptoxanthin, lutein, 3′‐epilutein, zeaxanthin, echinenone, 3′‐hydroxyechinenone, α‐doradexanthin, canthaxanthin, astaxanthin, lutein epoxide, antheraxanthin, violaxanthin, flavoxanthin, mutatoxanthin, luteoxanthin, auroxanthin, diatoxanthin, neoxanthin, sintaxanthin (new to lichens). fucoxanthinol, capsochrome, apo‐6′‐lycopenal, β‐apo‐2′‐carotenal, β‐apo‐10′‐carotenal, apo‐12′‐violaxanthal, paracentrone and rhodoxanthin.

The total content of carotenoids ranged from 5.5 (Heterodermia corallophora) to 243.3 μg g−1 dry weight (Teloschistes flavicans).
Distribution of the weed communities in the North East Nile Delta, Egypt
Authors: El‐Demerdash M. A. , Hosni H. A. , Al‐Ashri N.
Published: August 2010

The weed flora associated with field crops and orchards in Dakahleya Province, NE Nile Delta, were classified using TWINSPAN technique into nine weed groups dominated by nine weed species. These groups comprised 73 weed species related to 27 families. These species included 56 annuals (75.7%) and 18 perennials (24.3%). The recorded species were formed of 22 monocots and 52 dicots, with Poaceae as the most represented family (23.0%).

The application of the DECORANA technique resulted in a clear separation of the weed groups according to the seasonality of the host crops. Evironmental variables used in this study accounted for 84.3% of the variability of the weed groups composition.

Chorological analysis of the recorded species indicated that the study area comprises 24.6% of its species as all the year active species, 32.9% as summer active and 42.5% as winter active species. The Mediterranean elements (mono, bi & pluriregional) presented 44.4%, while, cosmopolitan elements attained 23.6%. The Mediterranen weed species extending into the Euro‐Siberian territory attained higher presentation in the study area as compared to those species with Saharo‐Sindian extension.

The ordination axis 1 showed significant relationships with soil clay, pH, water holding capacity, calcium carbonate and bicarbonate. Stepwise regression analysis selected clay, soil pH, water holding capacity, calcium carbonate and soil bicarbonate as the best set of predict – or variables of the weed species distribution in the study area. In the meantime, herbicide application and rate of hoeing were selected also as the best set of predictor variables of weed richness in the study area while calcium carbonate and silt were selected as the best set of predictor variables for weed diversity as measured by Shannon index.
A preliminary checklist of the flora of Qassim, Saudi Arabia
Authors: Al‐Turki T. A.
Published: August 2010

A total of 450 species (wild and cultivated) of flowering plants belonging to 257 genera in 62 families are reported as a preliminary estimate for the flora of Qassim. The systematic list consists of two species of Gymnosperms, 362 species of Dicotyledons and 86 of Monocotyledons. It is drawn from species collected as a result of several field trips to various localities, literature and specimens in local herbaria. New records (*) constitute 50 species.
A new species of Anthemis L. (Asteraceae–Anthemidae) from Saudi Arabia
Authors: Ghafoor Abdul
Published: August 2010

A new species of Anthemis L. (Asteraceae) is described from Wadi Badanah, northern Saudi Arabia. Taxonomic description, chorology and an illustration are provided. Morphological relationships with other closely allied taxa are discussed.
Fünf neue Arten und zwei neue Varietäten der Untergattung Platycaulon (Paepalanthus) – Eriocaulaceae
Authors: Tissot‐Squalli H. M. L.
Published: August 2010

Nach der aktuellen Revision (TISSOT‐SQUALLI 1996) umfaßt die Untergattung 47 Arten und sechs Varietäten, der größte Teil davon ist aus der Cadeia do Espinhaço (23) und aus der Serra Geral und Serra do Mar (11) in Brasilien bekannt. Im zweiten Diversifikationszentrum im Norden Südamerikas kommen 12 Taxa vor, in Peru mindestens vier andere. Drei neue Arten der Sektion Conferti, eine neue Art und zwei neue Varietäten der Sektion Divisi dieser Untergattung werden hier beschrieben, eine Varietät der Sektion Conferti wird zur Art erhoben.
Nomenklatorischer Überblick der Untergattung Platycaulon (Paepalanthus) – Eriocaulaceae
Authors: Tissot‐Squalli H. M. L.
Published: August 2010

Die Untergattung Platycaulon (Paepalanthus) ist in Zentral‐ und Südamerika, von Costa Rica bis Südbrasilien, verbreitet, mit Ausnahme der Region zwischen dem Amazonasbecken und den Tiefebenen der Chaco‐Region. Nach der aktuellen Revision (TISSOT‐SQUALLI 1996) umfaßt die Untergattung 47 Arten und 6 Varietäten, der größte Teil davon ist aus der Cadeia do Espinhaço (23) und aus der Serra Geral und Serra do Mar (11) in Brasilien bekannt. Im zweiten Diversifikationszentrum im Norden Südamerikas kommen 12 Taxa vor, in Peru mindestens vier andere.
Carotenoids in lichens from the States of New Mexico and Texas in the United States of America
Authors: Czeczuga B. , Worthington R. D.
Published: August 2010

Column and thin‐layer chromatography revealed the presence of the following carotenoids in the thalli of 64 lichen species from the States of New Mexico and Texas, USA: α‐carotene, β‐carotene, anhydroeschscholtzxanthin, β‐cryptoxanthin, rubixanthin, diatoxanthin, zeaxanthin, physalien, lutein, 3′‐epilutein, lycophyll, eschscholtzxanthin, crustaxanthin, heteroxanthin, lycopene‐5,6‐epoxide, antheraxanthin, lutein epoxide, neoxanthin, mutatoxanthin, neochrome, chrysanthemaxanthin, violaxanthin, luteoxanthin, auroxanthin, echinenone, hydroxyechinenone, α‐doradexanthin, idoxanthin, fucoxanthin, capsochrome, canthaxanthin, astaxanthin, apo‐6′‐lycopenal, paracentrone, β‐citraurin, β‐apo‐10′‐carotenal, apo‐12′‐violaxanthal, bixin, β‐carotenone and triphasiaxanthin.

The total content of carotenoids ranged from 12.2 (Rhizocarpon geographicum) to 196.8 μg g−1 dry weight (Caloplaca eugyra).
A generic review of the subtribe Ecliptinae (Heliantheae: Compositae) in West Africa
Authors: Isawumi M. A.
Published: August 2010

The subtribe Ecliptinae in West Africa is treated with about 36 taxa in 24 species aligned in seven genera. The genera are Wedelia, Complaya, Blainvillea Synedrella, Eclipta, Melanthera and Verbesina. W. trilobata, in West Africa, is now recognised as Complaya trilobata. All the Aspilia species in West Africa are transferred to Wedelia. In this study, microcharacters are extensively employed in the generic and specific circumscription and in making the new combinations.
Gefäßbündelanatomie der Blüten von Calandrinia grandiflora LINDL. und Calandrinia compressa SCHRAD. und vergleichende Blütenmorphologie der Portulacaceae
Authors: Volgin S. A. , Taleb M. Al
Published: August 2010

Es wurden die Blütenmorphologie und die Gefäßbündelanatomie von Calandrinia grandiflora LINDL. und Calandrinia compressa SCHRAD. (Portulacaceae) untersucht. Beide Arten besitzen noch ein gut entwickeltes System der Achsenbündel im Blütenboden. Gefäßanatomische Untersuchungen bestätigen, daß die Ausgangsform der Blüte in der Familie einen hochblättrigen (bzw. brakteaten) Kelch und eine zur Blütenkrone umgewandelte primär einfache Blütenhülle hat. Weder entwicklungsgeschichtliche noch morphologische und anatomische Angaben erlauben eine Hypothese über die Ursprünglichkeit entweder eines obhaplostemonen oder diplostemonen Androeceums: es muß primär polymer gewesen sein. Was das Portulacaceen‐Gynoeceum mit synaszidiater, symplikater, hemisymplikater und apokarper Zone betrifft, so scheint es, daß die Förderung des symplikaten Ovarabschnitts eine bedeutende Tendenz in der Evolution des Gynoeceums ist.
Vegetational patterns within coastal salines in southern Yemen
Authors: Kürschner H. , Al‐Gifri A. N. , Al‐Subai M. Y. , Rowaished A. K.
Published: August 2010

For the first time, the species diversity and zonation of coastal dunes and littoral salt marshes of the extensive coastal belt of southern Arabia is analyzed by means of two transects (Aden/Madinat as‐Shab; al‐Mukalla/Feleq). The vegetation analysis results five (Aeluropus lagopoides‐, Halopeplis perfoliata‐, Halopyrum mucronatum‐, Sevada schimperi‐association, and one rest group – Aden transect) respectively seven (Anabasis ehrenbergii‐, Arthrocnemum macrostachyum‐, Cyperus conglomeratus‐, Stipagrostis paradisea‐, Urochondra setulosa‐Arthrocnemum macrostachyum‐, Urochondra setulosa‐association, and one rest group – Feleq transect) homogenous ecological groups, which form clearly defined belts following a strong edaphical gradient. While the associations in the vicinity of Aden are in good accordance with those, reported from the coasts of the Red Sea and the Arabian Gulf, three new associations, partly rich in endemics are reported from the southern coast of Hadramout (Feleq transect). Due to the plantgeographical relationships of the taxa (Eritreo‐Arabian chorotype), they are strongly related to the coasts of NE Africa. In addition, Coelachyrum piercei is reported as new to the flora of Yemen, closing herewith a gap in the distribution pattern of this Omano‐Makranian taxon.

All taxa were examined with respect to their photosynthetic pathway type (Kranz syndrome, δ13C‐values) to clarify, if there is a correlation between the distribution of C3‐/C4‐plants and the ecological requirements of the halophytes. It turned out, that hygrohalophytes and oligohaline, xerix associations are dominated by C3‐plants, whereas C4‐plants are typical of xerohalophytic associations and those, showing an intermediate position with respect to soil salinity and available water.
Thujoxylon antissum sp. nov, ein fossiles Wurzelholz aus tertiären Schichten des Versteinerten Waldes von Lesbos, Griechenland
Authors: Süss H. , Velitzelos E.
Published: August 2010

Für die von UNGER (1847) eingeführte Gattung Thujoxylon wird eine veränderte Diagnose gegeben. Diese stützt sich auf Holzmerkmale der heutigen Vertreter von Thuja L. Ein Wurzelholz aus dem Versteinerten Wald von Lesbos (Griechenland) wird untersucht und als Thujoxylon antissum sp. nova beschrieben. Das Vorkommen eines fossilen Holzes mit Thuja‐Struktur in Griechenland ist für das Tertiär von Europa erstmalig. Das auf dem Wurzelquerschnitt in ungewöhnlicher Form ausgebildete Zuwachszonenmuster wird beschrieben.
Morphological diversity and taxonomy of the Pimpinella tragium VILL. group (Umbelliferae – Apioideae) in the Mediterranean
Authors: Yurtseva O. V. , Tikhomirov V. N.
Published: August 2010

Variability of morphological characters in Pimpinella tragium VILL. group was investigated using herbarium material natural populations field sampling and cultivated plants. As a result of anatomical and morphological research, and by means of Principal Component Analysis and Canonical Variance Analysis, two polymorphic species were distinguished – P. tragium VILL. with hairs 0.05–0.2 mm long and P. polyclada BOISS. & HELDR. with hairs 0.3–1 mm long. Both polymorphic taxa include forms differing in density of pubescence and leaf dissection. Distribution of pinnatisect and bipinnatisect leaf forms over the range corresponds to the pattern of summer precipitation and duration of the drought period. In P. tragium several ecotypes could be distinguished, differing in leaf shape and structure, life history and development rhythm. However, recognition of infraspecific taxa is inexpedient and can misrepresent the complicated pattern of morphological variability within P. tragium VILL.
Microhairs of Littorella uniflora (L.) ASCH. (Plantaginaceae)
Authors: Andrzejewska‐Golec E.
Published: August 2010

The presence of headed and headless microhairs has been described in Littorella uniflora. Only one type of plesiomorphic headed microhairs was observed on the leaves, scapes, bracts and calyx. The same hairtype was described previously in the numerous representatives of the genus Plantago. The above facts confirm the correctness including the taxon Litttorella to the Plantago by RAHN (1996).
Ergänzende Untersuchungen zur Taxonomie der Haselblattbrombeeren (Rubus L., Sektion Corylifolii) in Westdeutschland und benachbarten Ländern
Authors: Matzke‐Hajek G.
Published: August 2010

Es werden drei neue Rubus‐Arten der Sektion Corylifolii aus dem westlichen Mitteleuropa beschrieben: (1) Rubus foersteri sp. nova (Ser. Subthyrsoidei) ist verbreitet im westlichen Nordrhein‐Westfalen und den angrenzenden Niederlanden, (2) Rubus imbellis sp. nova (Ser. Subthyrsoidei) kommt im westlichen Rheinland‐Pfalz und dem benachbarten Luxemburg vor, und (3) Rubus pugiunculosus sp. nova (Ser. Subradula) ist als häufige Art im Dreiländereck Deutschland, Niederlande, Belgien nachgewiesen. Die Arten sind mit ihren Holotypen abgebildet. Die morphologische Charakterisierung wird durch Angaben zur Ökologie, Verbreitung und durch die Nennung von Herbarbelegen ergänzt. Rubus intricatus P.J.MÜLLER, eine seit ihrer Entdeckung im Jahr 1859 verschollene Brombeerart (Ser. Subthyrsoidei), wird erstmals ausführlich beschrieben, lectotypisiert und abgebildet. Diese Regionalart ist im Pfälzerwald und in der angrenzenden Rheinebene (Rheinland‐Pfalz) sowie im Saarland und im Elsaß (Frankreich) verbreitet.
The taxonomy of Fagus in western Eurasia, 1: Fagus sylvatica subsp. orientalis (= F. orientalis)
Authors: Denk Th.
Published: August 2010

Investigations of leaf and cupule morphology in Fagus sylvatica subsp. orientalis disclose a high phenotypic diversity. Local and regional population groups are connected by different morphological transitional forms. Transitions do not only occur as an ecocline from west to east but also in a mosaic‐like pattern (Transcaucasia). Therefore, we refrain from establishing subspecies or other taxonomic units but describe morphotypes and outline their ranges. The easternmost Iranian populations prove to be the most homogeneous, probably as the result of their geographic isolation. The strong similarities of Iranian populations to southeastern North American beech types (Fagus grandifolia subsp. caroliniana) are discussed.
Macro‐ and micromorphological evidence for infraspecific separation of taxa in Hibiscus rosa‐sinensis L. (Malvaceae)
Authors: Obute G. C. , Omotayo I. V.
Published: August 2010

The study was conducted to confirm the traditional separation of varieties of Hibiscus rosa‐sinensis L. according to corolla colour. Measurements were made on live plants of three varieties: red, orange and white, for plant height, number of branches, angles of branches, leaf size and floral whorl dimensions. Leaf shape, apex, base and floral behaviours at anthesis were also assessed. Micromorphological features like stomatal indices, complex types, their distribution on adaxial and abaxial surfaces, presence of foliar trichomes as well as pollen grain features were assessed. Results revealed enough evidence to confirm the traditional separation of these varieties despite the affinity of macromorphometric features. Suggestions were made to attempt explaining the paradox of high pollen grain fertility as against no fruit set and vegetative reproduction in the species.
A comparative study of leaf epidermis in European Corylaceae
Authors: Uzunova Kr.
Published: August 2010

A study of the epidermis of European Corylaceae is presented. All three genera can be distinguished by the leaf epidermis structure. Corylus avellana L. and C. colurna L. differ only in numerical quantitative characters such as trichome frequency and combinations of the trichomes.

Carpinus betulus L. and C. orientalis MILL. are very distinct in the structure of the stomatal apparatus, epidermal surface and appearence of anticlinal and periclinal walls. As a rule such large differences are more characteristic of the generic level. Ostrya carpinifolia SCOP. possesses prominently dense cuticular striations on the lower epidermis and acicular trichomes on the upper epidermis. Paracyclic, cyclocytic and laterocytic stomatal types were reported for the first time for the family. Those stomatal types corroborate the hamamelidian relationships of the family. Despite the differences in epidermal structures e.g. a combination of various stomatal types and cuticle ornamentation the investigated species as a whole form a natural evolutionary unit.
Carotenoids in some lichen species from Queensland (Australia)
Authors: Czeczuga B. , Rogers R. W.
Published: August 2010

Column and thin‐layer chromatography revealed the presence of the following carotenoids in the thalli of 17 lichen species from Queensland (Australia): α‐, β‐carotene, β‐cryptoxanthin, lutein, calthaxanthin, zeaxanthin, 3′‐hydroxyechinenone, canthaxanthin, lutein epoxide, antheraxanthin, violaxanthin, mutatoxanthin, neoxanthin, capsochrome, fucoxanthinol, β‐apo‐10′‐carotenal, β‐citraurin, apo‐10′‐violaxanthal (new to lichens) and paracentrone.

The total content of carotenoids ranged from 14.42 μg−1 dry wt. in Parmotrema cooperi to 56.66 μg−1 dry wt. in Pyxine pungens.
On two new terrestrial species of Oedogonium (Chlorophyceae, Oedogoniales)
Authors: Mahato A. K.
Published: August 2010

The present paper deals with the descriptions of two new terrestrial species of Oedogonium LINK (Oedogonium angensis sp. nova and Oedogonium dasii sp. nova) collected from moist soil of Munger, Bihar, India. The former species is macrandrous and monoecious, whereas the latter species is macrandrous and dioecious.
A new species of the genus Adesmia DC. (Fabaceae) from southern Córdoba, Argentina
Authors: Bianco C. A. , Weberling F.
Published: August 2010

A new species of Adesmia subgen. Adesmia, A. comechingona C. A. BIANCO & WEBERLING sp. nova is described. Until now, the species must be regarded as endemic to the southern slope of the Sierra de los Comechingones, southern Córdoba, Argentina.
Carotenoids in several lichen species from Yunnan, China
Authors: Czeczuga B. , Wang Li‐Song , Czeczuga‐Semeniuk E.
Published: August 2010

Column and thin layer chromatography revealed the presence of the following carotenoids in the thalli of 6 lichen species from Yunnan, China: β‐carotene, ϵ‐carotene, anhydroeschscholtzxanthin, β‐cryptoxanthin, lutein, zeaxanthin, isozeaxanthin; helenien, rubixanthin‐5,6‐epoxide, lutein epoxide, antheraxanthin, cryptoxanthin‐5,6,5′,6′‐diepoxide, echinenone, 3′‐hydroxyechinenone, canthaxanthin, celaxanthin, citranaxanthin, astaxanthin, auroxanthin, mutatoxanthin, mutatochrome, violaxanthin, neoxanthin, heteroxanthin, aphanizophyll, capsochrome, β‐apo‐10′‐carotenal and bixin.

The total content of carotenoids ranged from 19.35 in Ramalina conduplicans to 62.24 μg−1 dry weight in Sulcaria sulcaria.
Pseudotsuga jechorekiae sp. nova, der erste fossile Nachweis der Gattung Pseudotsuga Carrière nach Zapfen aus dem Miozän der Oberlausitz, Deutschland
Authors: Czaja A.
Published: August 2010

Aus der Tongrube Tetta‐Buchholz, Sachsen, wird eine neue Art der Gattung Pseudotsuga Carrière nach Zapfen beschrieben. Bei dem Fund handelt es sich um den ersten fossilen Nachweis von Zapfen der Gattung. Die neue Art wird mit rezenten Vertretern der Gattung verglichen.
Zwei neue fossile Hölzer der Formgattung Podocarpoxylon Gothan aus tertiären Schichten der Insel Lesbos, Griechenland
Authors: Süss H. , Velitzelos E.
Published: August 2010

Aus dem Versteinerten Wald von Lesbos (Griechenland) werden zwei neue untermiozäne Podocarpoxyla als Podocarpoxylon articulatum sp. nova und P. graciliradiatum sp. nova beschrieben. Von allen bisher bekannten Podocarpoxylon‐Arten unterscheiden sie sich vor allem durch die Gestalt ihrer Holzstrahlen. Die Arten Mesembrioxylon sarmai Varma, M. speciosum Ramanujam und M. trichinopoliense Varma werden umkombiniert und zur Gattung Podocarpoxylon und Podocarpoxylon rajmahalense (Jain) Müller‐Stoll & Schultze‐Motel zu Circoporoxylon gestellt. Die bisherigen Erkenntnisse über fossile Hölzer mit einer podocarpoiden Grundstruktur werden in einem der Arbeit vorangestellten Kapitel diskutiert. Außerdem wird über das Vorkommen von Faserstauchungen und ihre Auswirkungen auf die Ausbildung der Holzstruktur berichtet.
Sun leaf or shade leaf? – Known facts in the light of new data with implications for palaeobotany
Authors: Uhl D. , Walther H.
Published: August 2010

A short review of morphological and anatomical differences between sun and shade leaves as well as some new data about morphological differences of recent sun and shade leaves are given. It is shown that at least at the moment, it is not possible to differentiate between fossil sun and shade leaves only by means of morphological parameters. Additionally, a short definition of the terms of sun and shade leaf is given.
Principal component analysis of variation pattern among Cola nitida, Cola acuminata (Sterculiaceae) and their interspecific hybrids
Authors: Adebola P. O.
Published: August 2010

Morphological variation among selected accessions of Cola nitida (Vent.) Schott & Endl., C. acuminata (P. Beauv.) Schott & Endl. and their interspecific hybrids were studied at Cocoa Research Institute of Nigeria, Ibadan using Principal Component Analysis (PCA) and Average Cluster Linkage Analysis (ACLA). Measurements were taken on 30 vegetative and floral characters and the data obtained were subjected to statistical analysis. The results from both methods showed that the three groups of plants were morphologically similar but separable. The PCA revealed that the first five principal component axes accounting for 71.78% of the total variation with the first two axes accounting for 31.93% and 18.72% respectively. The major characters which account for the variation among the two species and their hybrids were peak flowering period, leaf shape, tree height, number of primary leaf veins, proportion of female flowers, leaf blade length and extent growth of twig.
Epidermale Anatomie von Odontopteris subcrenulata (Rost) Zeiller aus dem Stefan (Oberkarbon) von Blanzy‐Montceau (Zentralfrankreich)
Authors: Krings M. , Kerp H. , Uhl D.
Published: August 2010

Die Epidermis von Odontopteris subcrenulata aus dem Stefan (Oberkarbon) des Beckens von Blanzy Montceau (Zentralfrankreich) wird beschrieben. Die epidermale Anatomie von O. subcrenulata ist in vielen Aspekten mit der anderer odontopteridischer Taxa (z. B. Lescuropteris genuina, Odontopteris minor f. zeilleri, O. reichiana) vergleichbar, weist jedoch einige charakteristische Eigentümlichkeiten auf. Ein besonderes Merkmal der Epidermis von O. subcrenulata sind sekundäre, offenbar altersbedingte Veränderungen der stomatatragenden Bereiche der Fiederachsenunterseiten und der Interkostalbereiche der Fiederblättchenunterseiten durch zusätzliche Ein und/oder Auflagerungen, die auch die Spaltöffnungsapparate mit einschließen. Während junge Spaltöffnungsapparate offene äuβere Atemhöhlen besitzen, sind diese bei alten Spaltöffnungen fast vollständig verschlossen.
Taxonomic revision of Pleurospermum Hoffm. and related genera of Umbelliferae II. The genera Pleurospermum, Pterocyclus, Trachydium, Keraymonia, Pseudotrachydium, Aulacospermum, and Hymenolaena
Authors: Pimenov M. G. , Kljuykov E. V.
Published: August 2010

A taxonomic conspectus of seven genera of the Pleurospermum group is represented; it contains two species of Pleurospermum (s.str.), four species of Pterocyclus, one species of Trachydium, four species of Keraymonia, five species of Pseudotrachydium gen. nov., 15 species of Aulacospermum, and three species of Hymenolaena. For all names (accepted and taxonomic synonyms) the type materials are cited; species distribution are given according to countries and provinces. Nine new nomenclatural combinations are proposed (cf. p. 551–552).
Taxonomic revision of Pleurospermum Hoffm. and related genera of Umbelliferae III. The genera Physospermopsis and Hymenidium
Authors: Pimenov M. G. , Kljuykov E. V.
Published: August 2010

A taxonomic conspectus of the genera Physospermopsis and Hymenidium is presented containing 15 species in the former genus and 35 in the latter. For all accepted species and synonyms the type material are cited and the species distribution are given according to the countries and provinces. 36 new nomenclatural combinations are proposed (cf. p. 551–552).
Closest relatives of Chinese genus Arcuatopterus (Umbelliferae) in the Indian Subcontinent
Authors: Pimenov M. G. , Ostroumova T. A.
Published: August 2010

It has been shown that the three Umbelliferae species, distributed in Eastern Himalaya, and previously referred to the genera Angelica and Peucedanum, are very similar in their characters, including carpological ones, to the genus Arcuatopterus, which was regarded as Chinese endemic. Three new nomenclatural combinations are proposed. A key is provided to the six species of Arcuatopterus now recognized, and a nomenclatural summary is also given. The generic area does not go limits beyond of the East Asian floristic subingdom (from Sichuan to Nepal, Sikkim and Khasia Hills).
A new species of cat‐tail (Typha L.) from sect. Engleria (Leonova). N.Tzvel.
Authors: Mavrodiev E. V.
Published: August 2010

The article describes a new species of cat‐tail, Typha valentinii sp. nova, which should be referred to the sect. Engleria (Leonova) N.Tzvel.
Restionaceae seedlings: Morphology, anatomy and systematic implications
Authors: Linder H. P. , Caddick L. R.
Published: August 2010

Restionaceae differ from most monocot families in having both epigeal and hypogeal germination. The green cotyledons associated with epigeal germination have a central vascular strand as found in most epigeal monocotyledons. In some genera the cotyledon may have a hairpin‐like structure, also described for Anthericaceae. The cotyledon of the hypogeal seedlings is short, without green pigment and largely remains embedded in the seed coat. Hypogeal germination is correlated with large, woody, indehiscent, frequently myrmecochorous nuts, while epigeal germination is found in species with smaller indehiscent nutlets or seeds, dispersed in a variety of ways. The primitive condition is most likely epigeal germination. In hypogeal seedlings of some African and Australian taxa an epicotyledonary rhizome is found between the primary root and the first leaves. Seedlings of African Restionaceae frequently have elongated culm internodes, whereas in the Australian species studied, internodes are very short, resulting in a cluster of seedling leaves. The leaf blades, which in most species are only found on the seedlings, are very simple anatomically. However, they appear to be unifacial, similar to the leaf blades of Anarthria (Anarthriaceae). The anatomical specialisations in the blades mirror those recorded for the culm anatomy. These observations are consistent with the hypothesis that Centrolepidaceae may be neotonous Restionaceae. They also corroborate the morphology of the African Restionaceae, and the presently accepted phylogeny of the African genera of Restionaceae.
The order Aeluropodetalia littoralis in the flood plain of Atrek River (South West Turkmenia)
Authors: Rukhlenko I. A.
Published: August 2010

Halophytic communities of the hemicryptophytes in the lower part of the Atrek river valley (South‐Western Turkmenia) are described in the paper. The characteristic of nine new associations referred to new alliances is given. The new order Aeluropodetalia littoralis ord. nov. has been distinguished for the communities of halophytic hemicryptophytes in the Middle Asia.
A novel reactive ester derivative of biotin with reduced membrane permeability for in vivo biotinylation experiments
Authors: Strassberger Verena , Trüssel Sabrina , Fugmann Tim , Neri Dario , Roesli Christoph
Published: August 2010

The in vivo perfusion of rodent models of disease with biotin derivatives and the subsequent comparative proteomic analysis of healthy and diseased tissues represent a promising methodology for the identification of vascular accessible biomarkers. A novel, triply charged biotinylation reagent, NHS‐β‐Ala‐(L‐Asp)3‐biotin, was synthesized and validated in terms of its applicability for in vivo protein biotinylation. Compared to sulfo‐NHS‐LC‐biotin, NHS‐β‐Ala‐(L‐Asp)3‐biotin exhibited a reduced membrane permeability and a preferential labeling of proteins localized in compartments readily accessible in vivo from the vasculature.
Recurrent intrahepatic cholangiocarcinoma: single‐center experience using repeated hepatectomy and radiofrequency ablation
Authors: Kamphues Carsten , Seehofer D. , Eisele R. M. , Denecke T. , Pratschke J. , Neumann U. P. , Neuhaus P.
Published: August 2010

Background

Intrahepatic cholangiocarcinoma (IHC) is a rare liver malignancy with a rising incidence worldwide. Since no standard treatment has been established so far, the aim of this study was to assess the safety and efficacy of repeated liver resection and/or radiofrequency ablation (RFA) in selected cases with recurrent IHC.

Patients and methods

The outcome of 13 patients who had been treated at least once for recurrent IHC by repeated liver resection and/or RFA was retrospectively analyzed. A total of 12 repeated liver resections and 8 radiofrequency ablations were performed in these patients between 2002 and 2008.

Results

After a median follow‐up period of 28 months after primary liver resection (12–69 months), seven patients (54%) are still alive and three of these patients (23% of the entire cohort) are regarded as disease‐free. The median survival for all patients was 51 months (12–69 months). One‐ and three‐year survival after primary surgery was 92 and 52%, respectively, with an overall complication rate of 7.6%.

Conclusion

According to the present data, repeated liver resection and radiofrequency ablation are feasible in select patients with recurrent IHC. Both procedures can be regarded as safe and might lead to a prolongation of patient survival.