bluuebunny/crossref_metadata_2025_split huggingface dataset:
Organographic stomatal studies in some Indian species of Cucurbitaceae
Authors: Desai M. J. 
Published: August 2010

AbstractThe structure, development and distribution of stomata in the leaves, stems and fruits of five Indian species of Cucurbitaceae are studied. Anomocyclic, haplocytic, and paracytic stomata are observed. The abnormalities like stoma with one guard cell, unequal guard cells, without guard cells and contiguous stomata are also reported.
Taxonomic and phylogenetic significance of fruit walls in Asclepiadaceae
Authors: Kuriachen P. M. , Thomas V. , Dave Y. 
Published: August 2010

AbstractAnatomy of the fruit wall of Calotropis, Tylophora, Gymnema, Marsdenia, Wattakaka, Ceropegia and Leptadenia were studied for its taxonomic and phylogenetic significance. Epicarp is single layered in Calotropis, Ceropegia and Leptadenia, while in Marsdenia, Wattakaka, Tylophora and Gymnema it is multilayered. Mesocarp is parenchymatous possessing aerenchymatous tissue in all the genera studied. Endocarp is multilayered and lignified. Dehiscence of the follicle is marginicidal. Factors responsible for dehiscence are also discussed.
Zur syntaxonomischen Problematik des Verbandes Bruckenthalion spiculifoliae HT. 1949 (nom. nud.) und der Assoziation Junipereto‐Bruckenthalietum HT. 1938 (nom. nud.) auf der Balkan‐Halbinsel
Authors: Zupančič M. 
Published: August 2010

AbstractDie Ass. Bruckenthalio‐Juniperetum sibiricae HT. 1938 emend. ZUPANČIČ sowie der Verband Brukkenthalion HT. (1949) 1960 emend. ZUPANČIČ werden emendiert und in die Ordnung Vaccinio‐Piceetalia BR.‐BL. 1939 emend. K.‐LUND 1967 und die Klasse Vaccinio‐Piceetea BR.‐BL. 1939 emend. ZUPANČIČ 1976 eingeordnet.Die Ass. Bruckenthalio‐Juniperetum wird in die drei emendierten Subassoziationen Bruckenthalio‐Juniperetum poetosum violaceae HT. 1938 emend. ZUPANČIČ Bruckenthalio‐Juniperetum seslerietosum comosae HT. 1938 emend. ZUPANČIČ und Brukkenthalio‐Juniperetum campanuletosum abietinae Lj. MICEVSKI 1986 emend. ZUPANČIČ sowie in die neue Subass. Bruckenthalio‐Juniperetum piceetosum abietis ZUPANČIČ et EM mit der neuen Fazies Bruk‐kenthalio‐Juniperetum piceetosum betulosum pendulae ZUPANČIČ et EM unterteilt.
The cultivated races ofVignaSAVI in Cuba
Authors: Perrino P. , Shagarodsky T. , Esquivel M. , Uranga H. , Hammer K. 
Published: August 2010

AbstractThe cultivated species of the genusVignain Cuba have been studied on the basis of living material collected during recent missions and herbarium material. The highest variability was found inVigna unguiculatasubsp.unguiculata.Probably this race has been early introduced by the Spaniards to Cuba. Later on several species were introduced by east Asiatic immigrants. Introgression and adaptation are considered as the main causes for building up a pronounced infraspecific variation inVigna unguiculata.A key for the cultivated species is provided.
Die Vegetation des Krüselinsees bei Feldberg in Mecklenburg
Authors: Doll R. 
Published: August 2010

AbstractIn der vorliegenden Arbeit wird die reiche Vegetation des Krüselinsees dargestellt. Es konnten 12 Gesellschaften der Charetea fragilis, das Najadetum intermediae sowie 13 Gesellschaften der Potamogetonetea ermittelt werden. Ferner werden die Dynamik der Vegetationsentwicklung sowie Schutzmaßnahmen für den See diskutiert.
Non‐protein amino acids in the taxonomy of Tephrosia Pers. (Fabaceae) With 3 Figures and one Table
Authors: Rao J. V. Subba , Rao S. Raja Shanmukha 
Published: August 2010

AbstractThe free amino acids of the leaves have been analysed in nine species of Tephrosia. The presence of fortythree amino acids in all, has been detected and of these, twenty‐eight are non‐protein ones. The exclusive presence of certain non‐protein amino acids in some species has been found to be taxonomically useful.
Primulales ‐ a reassessment of the taxonomy and phylogeny of the group With one Figure and one Table
Authors: Geetha K. , Umadevi I. , Daniel M. 
Published: August 2010

AbstractA study on the foliar phytochemicals of the members of Primulaceae and Myrsinaceae revealed that the former family characteristically produces unique flavones and the latter the common flavonols. The uniqueness of the Primulaceae is brought out and a probable origin from the Violales is proposed. Myrsinaceae and Theophrastaceae are grouped in the Myrsinales which are derived from the Theales. Due to their probable relationships, the Plumbaginaceae also are included in the Myrsinales.
Gradient analysis of the common species in the saline and marshy habitats in the Nile Delta With 2 Figures and one Table
Authors: El‐Din A. Sharaf , El‐Kady H. F. , Sodany Y. 
Published: August 2010

AbstractThe present study aims at evaluating the behavior of 12 wild species, distributed at the saline and marshy habitats in the North Delta region, in relation to some soil variables. Some species have significant simple correlation with certain soil variables (salinity, CaCO3, nitrogen and organic matter). Some other species have bimodel behavior along some soil gradients, while all the examined species have monomodal behavior along, at least, one soil gradient.
Embryology of Balsaminaceae — I
Authors: Raghuveer M. , Narayana L. L. 
Published: August 2010

AbstractThe development of anther, ovule, male and female gametophytes has been studied in ten species of Impatiens. The floral parts develop acropetally. The anther wall development follows the ‘basic’ type. Sterile bands of sporogenous origin, divide the sporo‐genous tissue in small groups. The present study confirms the tetrasporangiate nature of the anthers in I. clavicornu refuting the statement of SHIMIZU et al. (1990), that they are trisporangiate. Cytokinesis takes place by furrowing. Ripe pollen is 2‐celled and the generative cell is elongated. The pollen grains are 3‐ to 5‐colpate and show onci.The ovule in Impatiens is tenuinucellate, bitegmic, and anatropous with dorsal raphe. The integuments are free in I. grandis (I. hookeriana) and fused nearly to the top in the remaining species. The micropyle is formed by the inner integument alone. An endothe‐lium is differentiated. Both linear and T‐shaped megaspore tetrads have been observed. The embryosac development conforms to the Allium type in I. oliveri and Polygonum type in the remaining species. The antipodals are ephemeral. Polar nuclei fuse before fertilization. The embryosac elongates crushing the nuclear cells below and reaches the chalazal end. The mature embryosac borders upon the endothelium.
The genus Malabaila HOFFM. (Umbelliferae: Tordylieae): A carpological investigation and taxonomic implications
Authors: Pimenov M. G. , Ostroumova T. A. 
Published: August 2010

AbstractMalabaila graveolens BIEB., a generotype of Malabaila, has been shown to be identical or very similar to the species of Pastinaca in all essential taxonomic characters including carpological. Thus the species and closely related, if the separate. M. vaginans are the members of Pastinaca. But it is impossible to include all other “Malabailas” into Pastinaca, because they differ from the latter in some significant features of fruit structure. These species form a separate genus, intermediate between Pastinaca (incl. Malabaila s. str.) and Zosima. Its correct name seems to be Leiotulus EHRENBERG. The detailed carpological descriptions and synonymy summaries for all Leiotulus species have been given, and new nomenclatural combinations have been proposed.
Cuticular and epidermal studies of some Erythrina L. species (Leguminosae)
Authors: Dwivedi A. K. , Ahmad K. J. 
Published: August 2010

AbstractStudies have been carried out on the cuticle and epidermis of ten species of Erythrina L. Foliar cuticular and epidermal structures of ten species of genus namely, Erythrina blakei PARK., E. crista‐galli L., E. fusca LOUR., E. humeana SPRENG., E. lysistemon HUTCH., E. resupinata ROXB., E. stricta ROXB., E. valutina WILLD., E. variegata L. and E. vespertilio BENTH. have been studied with the help of scanning electron microscope and light microscope. Several unique characters such as, network of papillae branched biarmed and stellate trichomes, otherwise unknown in tribe Phaseoleae, have been recorded in various species. The cuticular and epidermal characters support the placements of genus Erythrina in a separate tribe (Erythrineae) of its own.
Effect of automobile exhaust pollution on leaf surface structures of Calotropis procera L. and Nerium indicum L
Authors: Kulshreshtha K. , Srivastava K. , Ahmad K. J. 
Published: August 2010

AbstractThe effect of automobile exhaust pollution on leaf surface structures (including epidermal feature) of two common plant species namely. Calotropis procera L. and Nerium indicum L. were studied. Size and frequency of epidermal cells, stomata and trichomes were observed under light microscope and their surface structural details were seen with scanning electron microscope. Traffic density in three different seasons of the year 1991 were noted by counting the number of vehicles/hour and the suspended particular matter (spm) level in μg/m3 were measured by Anderson's High Volume Sampler.
Heavy metals of Antarctic lichens 1. Umbilicaria
Authors: Upreti D. K. , Pandev Vivek 
Published: August 2010

AbstractHeavy metal concentrations in Umbilicaria aprina NYL. and U. decussata (VILL.) ZAHLBR. growing luxuriantly in and around Maitri Station of the Schirmacher Oasis of East Antarctica investigated. Iron, copper, lead and chromium levels have been determined. The presence of lead in lichen samples is quite interesting as it is mainly derived from a man‐made pollutant, transported to the polar atmosphere owing to its use as an antiknock petrol additive.
On the taxonomy of the genus Euphorbia (Euphorbiaceae) in Egypt
Authors: El‐Karemy Z. 
Published: August 2010

AbstractTaxonomic investigations on the species of the genus Euphorbia, the largest genus of flowering plants represented in Egypt, are carried out. Five taxa are new records to those reported by EL‐HADIDI (1974): Euphorbia indica, E. Schimperi, E. hierosolymitana, E. sintenisii, and E. terracina var. modesta. The new status and combination E. terracina var. alexandrina is formed. A key, annotated enumeration of species, distribution and ecology are also provided.
Species relationships in genus Lens as indicated by electrophoresis—a reappraisal
Authors: Sammour R. H. 
Published: August 2010

AbstractThe seed proteins of Lens culinaris subsp. culinaris, L. culinaris subsp. orientalis, L. culinaris subsp. odemensis, nigricans subsp. nigricans and L. nigricans subsp. ervoides were electrophoretically analyzed on SDS‐PAGE. The electrophoretic bands or characters were numerically analyzed using cluster analysis. It is found that L. culinaris subsp. orientalis and L. culinaris subsp. odemensis are probably the gene pool of the wild progenitor of L. culinaris subsp. culinaris.
Development and structure of seedcoat in Tephrosia PERS. (Leguminosae)
Authors: Sharma N. K. , Sharma K. C. 
Published: August 2010

AbstractIn Tephrosia purpurea the ovary is superior, unilocular and ovules are bitegmic and campylotropus. The seedcoat is derived from the outer integument alone. The mature seedcoat is differentiated into a layer of macrosclereids and osteosclereids underlain by 5–6 layers of parenchymatous cells. SEM studies of seed surface in T. purpurea show reticulate pattern and T. strigosa shows polygonal areas.Bei Tephrosia purpurea ist der Fruchtknoten oberständig unilokular und die Samenanlagen sind bitegmisch und gekrümmt. Die Samenhülle ist ausschließlich vom äußeren Integument abzuleiten. Die reife Samenhülle gliedert sich in je eine Schicht von Makrosklereiden und Osteosklereiden, die von 5–6 Schichten von Parenchymzellen unterlagert werden. SEM‐Untersuchungen der Samenoberfläche erbrachten für T. purpurea ein retikulates Muster, für T. strigosa polygonale Bereiche.
Enumeratio Albucarum (Hyacinthaceae) Austro‐Africanarum adhuc cognitarum. 1. Subgenus Albuca
Authors: Müller‐Doblies Ute 
Published: August 2010

AbstractAn alphabetical list of species of the subgenus Albuca (19 species including 10 new ones)including the important synonyms is presented, and note on the distribution as well as diagnoses for the new species are given. This subgenus is endemic to Southern Africa (Cape Province, radiating into Namibia with five species and into Transkei with one species). In the most recent “List of Species of Southern African Plants” (GIBBS RUSSEL et al. 1985) 54 species of Albuca are recognized, to which three new species by HILLIARD & BURTT (1985) are to be added. Of these 57 Albuca names thirteen names concern subgenus Albuca of which six represent synonyms according to the present paper, leaving seven legitimate names = about 50% of the names concerned in the GIBBS RUSSEL list or = 37% of the species recognized by the present paper.
Weed plant communities of orchards in Siwa Oasis, Egypt
Authors: El‐Ghani M. M. Abd 
Published: August 2010

AbstractWeed plant communities of orchards in Siwa Oasis have been studied. Phytosoziological analysis was carried out based on 116 releves selected from the cultivated land where orchards habitat dominating the plant life. Three associations have been discussed, and defined mainly according to their floristic structure and composition as well as their environmental relationships. Two of them: Convolvulo (arvensis)‐Imperatetum cylindrici and Euphorbio‐Stellarietum medici were described as new syntaxa in the present study. Floristic analysis revealed the modest representation of pure Mediterranean taxa, while bi and pluriregional taxa constitute the main bulk of the flora of orchards in Siwa Oasis, denoting the severe human interference in this area.
The carotenoids of Pseudevernia furfuracea along a North‐South gradient in Europe
Authors: Czeczuga B. , Christensen St. N. 
Published: August 2010

AbstractThe whole‐lichen carotenoid composition was analysed in Pseudevernia furfuracea from various localities in Europe.Fifteen carotenoids were identified.ß‐Carotene, lutein epoxide and violaxanthin were found in the thalli of all specimens of Pseudevernia furfuracea var. furfuracea while β‐carotene, lutein epoxide, violaxanthin and astaxanthin occurred in the thalli of all specimens of Pseudevernia furfuracea var. ceratea. The carotenoids in relation to the ecology and taxonomy is discussed.
Foliar epidermis and petiole anatomy of four species of Celosia L. in Nigeria
Authors: Illoh H. C. 
Published: August 2010

AbstractThe foliar anatomy of four Celosia species occurring in southwestern Nigeria is described. The distinguishing characteristics of taxonomic value include the petiole shapes in distal, median and proximal regions, arrangement of vascular supply to the petioles, presence or absence of protuberances on the polar ends of the stomata and size as well as the arrangement of crystals in the leaf blade. The use of anatomy in distinguishing two closely related species C. argentea and C, cristata is discussed.
Lectotypification of Linnaean Achillea species: A. tomentosa, A. atrata and A. nana
Authors: Valant‐Vetschera K. M. 
Published: August 2010

AbstractLectotypes for A. tomentosa, L., A. atrata L. and A. nana L. have been selected on the basis of studies both in literature and relevant herbaria. The Linnaean species concept of A. atrata L. includes also A. clusiana TAUSCH and A. moschata WULF. as is obvious from elements used for description (herbaria and figures). The lectotype for A. tomentosa is designated as LINN 1017.3. The Herbarium Burser contains the lectotypes of A. atrata: specimen VII: 16, and of A. nana: specimen VII (1): post 6 (UPS).
Enumeratio Albucarum (Hyacinthaceae) Austro‐Africanarum adhuc cognitarum 2. Subgenus Falconera (SALISB.) BAKER emend. U.M‐D. 1987
Authors: Müller‐Doblies U. 
Published: August 2010

AbstractAn alphabetical list of species of Albuca subgenus Falconera (19 species including 13 new ones) is presented with notes on their distribution. For the six old species the diagnostic characters are provided with occasionally additional comments. For the new species diagnoses and an explanation of the epitheton are given. All 19 species are illustrated by at least one figure.Like subgenus Albuca it has its main distribution in the Cape Province radiating to the east with one species into Natal and Transvaal and northwards into Namibia with four species, one of them only known from the type locality, and one occurring in Namibia and Angola. Thus the subgenus Falconera is strictly speaking not endemic to Southern Africa.Within subgenus Falconera two sections are distinguished, sect. Falconera (14 spp.) with six fertile anthers and sect. Trianthera (five spp.) with only three fertile anthers.Only two accepted species (A. fragrans JACQ. and A. viscosa L.f.) were already described in the eighteenth century, in each of the following centuries two accepted species were added (A. shawii BAKER and A. monophylla BAKER in the nineteenth century, and A. bifoliata DYER and A. crudenii ARCHIBALD, both from the Eastern Cape, in this century until 1956).
Comparative examination of the moving process in monocot and dicot seedlings using the example Lapeirousia laxa (Iridaceae) and Foeniculum vulgare (Apiaceae)
Authors: Pütz N. , Sukkau I. 
Published: August 2010

AbstractGeophytes require a special depth in the soil, and therefore, seedlings of many plant species move downward very soon after germination. In this paper, a comparison is made using two examples, the monocotyledonous Lapeirousia laxa and the dicotyledonous Foeniculum vulgare. Using time lapse photography, functional differences become clear, characterised by typical seedling morphology.During germination of Foeniculum vulgare, the hypocotyl elongates, which later has to be compensated by root and hypocotyl contraction in order to give the perennation buds a lower position for sprouting in the following year. In Lapeirousia laxa the primary internodes remain short, and form the perennation organ (a corm), with their perennation buds protected by soil from the outset. Downward movement of the corm occurs by the contractile roots which develop successively at the corm. At the end of the first vegetation period, the corms of Lapeirousia laxa are in a 60–100 mm deeper position. In contrast, Foeniculum vulgare develops a turnip as its perennation organ, which, through self‐contraction causes the perennation zone to become lower. At the end of movement, the perennation buds are approximately 15–25 mm below the soil surface, while the total movement of the buds is measured to be 30–40 mm.
Floral morphology of North American Eriocaulaceae and its taxonomic implications
Authors: Stützel Th. , Gansser N. 
Published: August 2010

AbstractDue to the small size of the flower even basic information about the floral diagram in some genera of Eriocaulaceae is lacking. In this study it is shown, that the anthers of Lachnocaulon are not monothecate‐bisporangiate by lateral reduction as assumed in the past but bithecat‐bisporangiate by facial reduction. This is in contrast to the findings in Tonina and Philodice (STÜTZEL 1985), where occasional and irregular lateral reductions may occur. The dehiscence mechanism of the anthers of Lachnocaulon is very uncommon in opening the sporangia of both thecae with a single longitudinal slit. No rudiments of petals can be found in Lachnocaulon during the whole morphogenesis of male and female flowers.Species of Syngonanthus without gynoecial nectaries do not have the stigmas in carinal position but in commissural position as it is typical for the genus. There is no argument to regard species of Syngonanthus without gynoecial glands as a link to Eriocaulon, which lacks also gynoecial nectaries but has the stigmas in carinal position.
Die Mikromorphologie epicuticularer Wachse bei den Caprifoliaceae
Authors: Theisen I. , Barthlott W. 
Published: August 2010

AbstractThe micromorphology of epicuticular waxes of all 13 genera of the Caprifoliaceae have been examined by scanning electron microscopy. The majority of waxy genera – representing almost all tribus – show wax platelets on their cuticles. In contrast to this wax tubules characterize only Symphoricarpos, and members of the tribus Caprifolieae. Symphoricarpos, which has hitherto an uncertain position in the Caprifoliaceae and often be considered as a member of the tribe Linnaeeae should now be incorporated into Caprifolieae. These necessary integration was already made by WEBERLING.
Die in Zentraleuropa verwilderten und kultivierten nordamerikanischen Astern
Authors: Hoffmann M. H. 
Published: August 2010

AbstractTaxonomie und Nomenklatur der in Zentraleuropa verwilderten nordamerikanischen Aster‐Arten wurden untersucht. Merkmale der Involukralblätter und Scheibenblüten zeigten die größten Unterschiede. Für die verwilderten und wichtige kultivierte Arten wurde ein Bestimmungsschlüssel erarbeitet. Sofern sichergestellt, wurden die komplette Nomenklatur und eine Liste der Synonyme für die verwilderten Arten aufgeführt. Einige der durch Nees Von EséNbeck beschriebenen Taxa wurden anhand von Originalbelegen aus den Sammlungen des British Museum (Natural History) typisiert.
Psammophorous plants and other adaptations to desert ecosystems with high incidence of sandstorms
Authors: Jürgens N. 
Published: August 2010

AbstractSandstorms are an important climatic phenomenon of many deserts, causing major ecological problems for plant life. A number of features observed in desert plants allow survival under certain ecological constraints caused by wind‐blown sand and related phenomena.In this context, a peculiar adaptation to desert conditions, the “psammophorous” plants, are of special interest. Hitherto under‐rated, many plant species possess specialized structures, enabling them to fix a protective layer of sand grains on parts of their surface. An analysis of the distribution, ecology, and structural peculiarities of psammophorous plants in the Namib and Karoo is presented.It is proposed that strongly developed psammophory primarily has evolved as an adaptation to habitats which experience a high impact from wind blown sand, while the phenomenon in less well developed cases might be of relevance for the plant water budget, thermal energy balance, serve as protection against herbivores or have a mimetic function.
Fossile Hölzer der Familie Taxodiaceae aus tertiären Schichten des Versteinerten Waldes von Lesbos, Griechenland
Authors: Süss H. , Velitzelos E. 
Published: August 2010

AbstractAus dem Versteinerten Wald von Lesbos in Griechenland wird über das Vorkommen von oberoligozänen bis untermiozänen Taxodiaceae‐Hölzern berichtet. Außer den bereits bekannten ArtenTaxodioxylon gypsaceum, T. albertenseundT. pseudoalbertensewerden zwei neue Arten,Taxodioxylon megalonissumsp. nova undGlyptostroboxylon microtracheidalesp. nova, beschrieben.Taxodioxylon megalonissumgrenzt sich durch den gleichmäßigen Verlauf der radialen Tracheidendurchmesser innerhalb einer Zuwachsperiode und den plötzlichen Übergang vom Früh‐ zum Spätholz von allen bisher beschriebenen Taxodioxyla eindeutig ab.Glyptostroboxylon microtracheidalestimmt gut mit dem Holz der in Süd‐und Westchina weit verbreitet vorkommendenCunninghamia lanceolataüberein. Das Vorkommen vonTaxodioxylon albertenseundT. pseudoalbertensein Griechenland ist für das Tertiär von Europa erstmalig. Die bisherigen Erkenntnisse über fossile Hölzer mit einer Taxodiaceen‐Grundstruktur werden in einem der Arbeit vorangestellten Kapitel diskutiert.
Thesium diffusum – eine für die Ukraine und Rußland alte neue Art
Authors: Hendrych R. 
Published: August 2010

AbstractThesium diffusum ANDRZEJOWSKI ex A. DC. in DC. (1857) ist fast vergessen, nur BORDZILOVSKIJ (1913) bezeichnet es als eine Art, identisch mit dem oreo‐euxinen Th. procumbens C. A. MEYER (1831). Unter diesem Namen ist es bis zur Gegenwart aus der Mittelukraine und dem südwestlichen Randgebiet Rußlands bekannt. Die Bezeichnung der dortigen Pflanzen als Th. diffusum als selbständige und für dieses Gebiet endemische Art ist berechtigter.