bluuebunny/crossref_metadata_2025_split huggingface dataset:
Three nannandrous species of Oedogonium LINK (Chlorophyceae, Oedogoniales) from Bihar, India
Authors: Mahato A. K. , Mahato Pushpa 
Published: August 2010

AbstractThe 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

AbstractA 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

AbstractAudouinella 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

AbstractTwo 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

AbstractSummaryThe 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

AbstractThe 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

AbstractIn 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

AbstractIm 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

AbstractColumn 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

AbstractThe 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

AbstractA 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.
Fünf neue Arten und zwei neue Varietäten der Untergattung Platycaulon (Paepalanthus) – Eriocaulaceae
Authors: Tissot‐Squalli H. M. L. 
Published: August 2010

AbstractNach 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

AbstractDie 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

AbstractColumn 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

AbstractThe 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

AbstractEs 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

AbstractFor 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

AbstractFür 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

AbstractVariability 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

AbstractThe 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

AbstractEs 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

AbstractInvestigations 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

AbstractThe 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

AbstractA 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.