摘要:

AbstractThe present paper continues the series on taxonomic problems of the powdery mildews. The following new descriptions and combinations are proposed:Erysiphe viciae‐unijugae(Homma) U. Braun comb. nov.,E. hirataeU. Braun sp. nov.,E. hommaeU. Braun sp. nov.,E. sediU. Braun sp. nov.,E. pileae(Jač.) Bunkina ex U. Braun sp. nov.,E. echinopisU. Braun sp. nov.,Microsphaera nomuraeU. Braun spec. nov.,M. pseudoacaciae(Marčenko) U. Braun comb. nov.,M. caryaeU. Braun spec. nov., andM. jaczewskiiU. Braun nom. nov. Taxonomy and nomenclature ofMicrosphaeraonViburnumare discussed. The EuropeanMicrosphaeraonViburnum opulusL. and the North American forms are considered to belong to one species.Microsphaera sparsaHowe is the correct name.Microsphaera hedwigiiLév. onViburnum lanataL. is kept as a separate spe

ISSN:0014-8962    

DOI:10.1002/fedr.19810920702

出版商:Wiley‐VCH Verlag    

年代:1981

数据来源: WILEY

ISSN:0014-8962    

DOI:10.1002/fedr.19810920703

出版商:Wiley‐VCH Verlag    

年代:1981

数据来源: WILEY

摘要:

AbstractThe structure and development of stomata on the leaves of 35 species of Verbenaceae are described. Mature stomata are anomocytic, haplocytic, transitional between paracytic and diacytic, paracytic, diacytic, anisocytic, tetracytic, tricytic, cyclocytic and bipolar. The different types occur in different combinations even on the same surface. In all there are 24 combinations. Inspite of the diversity the most frequent type is anomocytic inCallicarpa macrophylla, Citharexylum, Duranta, Holmskioldia, Premna(exceptPr. latifolia), Priva, Stachytarpheta indica(ab),Tectona, Verbena(except adaxial surface ofV. indica, V. officinalis, V. stricta), diacytic inAvicennia, C. tomentosa, Petrea, Phyla, Pr. latifolia, S. mutabilisand adaxial surface ofS. indicaand anisocytic inBoucheaand adaxial surface ofV, incisa, V. officinalisandV. stricta.A few variations in basic stomatal morphology encountered are (i) stomata with common subsidiary cells, (ii) an increase in the number of subsidiary cells by wall formation or the neighbouring perigenes assuming their shapes, (iii) unusual type of anisocytic stoma and completely amphicyclic anisocytic stoma, (iv) juxtaposed, superposed, at right angles or obliquely oriented contiguous stomata, (v) a stoma with unequal guard cell, one guard cell, epidermal cell like guard cells and only with pore.Stomata with subsidiary cells are mesogenous but a few diacytic and anisocytic ones are mesoperigenous. The anomocytic and cyclocytic are perigenous. Ontogeny of tetracytic and bipolar is not traced.The taxonomic importance of stomatal morphology as an aid to delineate genera and species within a genus is also indicated.

ISSN:0014-8962    

DOI:10.1002/fedr.19810920704

出版商:Wiley‐VCH Verlag    

年代:1981

数据来源: WILEY

摘要:

AbstractThe organs investigated may be hypo‐ or amphi‐stomatic. The epidermal cells are either polygonal, isodiametric or elongated and irregular with mostly straight, occasionally arched and rarely sinuous anticlinal walls. The epidermal cells may be arranged either uniformly or in vertical rows or without any definite pattern. The mature stomata are either anomocytic, anisocytic, paracytic, with a single subsidiary cell or transitional between paracytic and diacytic. Arrested development and cytoplasmic connections between adjacent stomata are also observed. The development of anomocytic type is haplocheilic or perigenous while that of the other types is syndetocheilic or mesogenous. Taxonomic significance is also discus

ISSN:0014-8962    

DOI:10.1002/fedr.19810920705

出版商:Wiley‐VCH Verlag    

年代:1981

数据来源: WILEY

摘要:

AbstractThe structure and development of stomata are described in the leaves of 8 genera and 12 species of the Gentianaceae Menyanthaceae complex. Out of the twelve species studied vegetative and floral organs are investigated in five. The epidermal cells are either squarish, rectangular or polygonal and isodiametric or elongated or irregular in outline. In Gentianaceae the mature stomata are anomocytic, actinocytic, anisocytic, paracytic, diacytic and stoma with a single subsidiary cell. While they are mostly anomocytic very rarely actinocytic and paracytic in Menyanthaceae. In Gentianaceae the ontogeny of anisocytic, paracytic, diacytic and stoma with a single subsidiary cell is mesogenous, while that of anomocytic and actinocytic perigenous. Anomocytic, actinocytic and paracytic stomata ofNymphoides indicaconforms to the perigenous type of development. Abnormalities such as arrested development; cytoplasmic connection between adjacent stomata; single guard cell; contiguous stomata and division of one or both the guard cells of a stoma are noticed. Guard cells ofExacum pedunculatumcontain needle like crystals of calcium oxalate. The present observations support the separation of the Gentianaceae and Menyanthaceae.

ISSN:0014-8962    

DOI:10.1002/fedr.19810920706

出版商:Wiley‐VCH Verlag    

年代:1981

数据来源: WILEY

摘要:

AbstractThe structure, ontogeny, classification, taxonomic significance of trichomes and extra‐floral nectaries in eight cultivars of cotton are described. In all twelve trichome types: 3 main and 10 subtypes of eglandular and one main and 2 subtypes of glandular are described. The type and distribution of trichomes are dependent upon climatic conditions in which the plants are growing. The glandular and eglandular trichomes as well as extra floral nectaries originate from a single papillate trichome or nectary initial respectively. On the basis of trichome studies, the separation of sectionsHerbaceaandHirsutaseems to be justifie

ISSN:0014-8962    

DOI:10.1002/fedr.19810920707

出版商:Wiley‐VCH Verlag    

年代:1981

数据来源: WILEY

摘要:

AbstractAus Flußauen der Mongolischen Volksrepublik (MVR) wird anhand von Vegetations‐aufnahmen über das Auftreten von vier Gesellschaften der Zwergbinsenvegetation (Isoeto‐Nanojuncetea, Cyperetalia fusci) berichtet. Es wurde eine Juncus, bufoniue‐Limosella aquatica‐Ges., eine Eleocharia acicularis‐Schoenoplectus supinus‐Ges., eine Cyperus fuscus Ges. und eine Koenigia islandica‐ Veronica rubricaulis‐Ges. ausgeschieden. Bei der Erfassung der Zwergbinsenvegetation konnten für das Gebiet der MVR 6 neue Arten nach‐gewiesen werden: Dichostylia hamulosa, Schoenoplectw, supinus, Middendorfia borystheleica, Centaurium puchellum ssp. meyeri und Veronica rubricaulis. Die kurzlebige annuelle Zwergbinsenvegatation ist, wenn auch häufig fregmentarisch, im Gebiet der MVR wesentlich weiter verbreitet und sollte stä

ISSN:0014-8962    

DOI:10.1002/fedr.19810920708

出版商:Wiley‐VCH Verlag    

年代:1981

数据来源: WILEY

ISSN:0014-8962    

DOI:10.1002/fedr.19810920709

出版商:Wiley‐VCH Verlag    

年代:1981

数据来源: WILEY

摘要:

AbstractThe contribution deals with phytocenological, ecological and syntaxonomical characteristics of the association Marrubio peregrini‐Salvietum nemorosae Eliáš 1980. It is a thermoxerophytic semi‐ruderal community of the Pannonian floristic region. It occurs on open, sunny and dry slopes of raw loess soils disturbed by water erosion, but also rarely on black soils, in cultural landscape. The association is early summer community with optimum of its seasonal development in the end of May and in the beginning of June.The association belongs to the pannonian or pontic‐pannonian alliance Marrubion peregrini Slavnić 1951 em. Eliáš 1979 and to the order Meliloto‐Artemisietalia absinthi

ISSN:0014-8962    

DOI:10.1002/fedr.19810920710

出版商:Wiley‐VCH Verlag    

年代:1981

数据来源: WILEY

摘要:

AbstractSiehe dazu den 1. Teil dieser Arbeit in Feddes Repertorium,92(4), 303–332, 198

ISSN:0014-8962    

DOI:10.1002/fedr.19810920711

出版商:Wiley‐VCH Verlag    

年代:1981

数据来源: WILEY