摘要:

AbstractAus der spanischen Flora wird eine neue Art der GattungSideritisL. beschrieben.

ISSN:0014-8962    

DOI:10.1002/fedr.19921030502

出版商:Wiley‐VCH Verlag    

年代:1992

数据来源: WILEY

ISSN:0014-8962    

DOI:10.1002/fedr.19921030503

出版商:Wiley‐VCH Verlag    

年代:1992

数据来源: WILEY

摘要:

AbstractThe cuticular ornamentations of 33 species belonging to 25 genera of the family Euphorbiaceae have been studied by scanning electron microscopy. In this family seven main types of ornamentations, i.e. striate, reticulate, filigree, ridges, wrinkled, mixed and smooth types have been observed. The prominent type is striate. The present study does not elucidate a clear pattern of relationships between the sculpturings of the family and its taxonomic divisions at sub‐family level; however, the study indicates considerable diagnostic value of cuticular ornamentations at tribal and sub‐tribal le

ISSN:0014-8962    

DOI:10.1002/fedr.19921030504

出版商:Wiley‐VCH Verlag    

年代:1992

数据来源: WILEY

摘要:

AbstractThe variation of fruits and infrutescences in 51 taxa of the genusBiscutellais reported. The basic structure of the fruit is similar in all species – a stalked strongly compressed indehiscent didymous silicula which breaks from the axis into two one‐seeded loculi at maturity. The peculiar and distinctive nature of the fruit constitutes the most important diagnostic feature for separating the genus from other genera. There is considerable variation in fruit size both within and between some species, e.g. the smallest fruits are found inB. microcarpawhere they hardly exceed 2.5 mm × 5.0 mm while inB. megacarpaeathey could be as big as 11.0 mm long and 18.5 mm wide. Prominent among species with significant intra‐specific variation areB. lusitanica, B. sempervirens, B. glacialisandB. valentina.The apex of the fruit is notched to varying extents except inB. auriculatawhere the margins run continuously with the style and the apex is therefore not notched. Style is persistent and contributes to the distinctive appearance of the fruit and the recognition of some species. Other variable characters include the pedicel, margin, valve shape and pubescence. The infrutescence varies from a simple raceme to a much‐branched panicle. The flexuous branches of some taxa constitute an important feature for their preliminary identification. Some of these characters are of value in clarifying the taxonomic relationships among some compon

ISSN:0014-8962    

DOI:10.1002/fedr.19921030505

出版商:Wiley‐VCH Verlag    

年代:1992

数据来源: WILEY

ISSN:0014-8962    

DOI:10.1002/fedr.19921030506

出版商:Wiley‐VCH Verlag    

年代:1992

数据来源: WILEY

摘要:

AbstractSeed morphology has been studied both under LM and SEM in 12 taxa ofTephrosia.The seed shape is oblong, reniform or orbicular and the colour pale yellow (with dark mottlings), yellowish brown, blackish brown or black. The surface texture is mostly smooth and the hilum median or submedian. The spermoderm pattern as observed under SEM is simple‐reticulate, multi‐reticulate or lophate. A key is presented for delimiting the taxa stud

ISSN:0014-8962    

DOI:10.1002/fedr.19921030507

出版商:Wiley‐VCH Verlag    

年代:1992

数据来源: WILEY

ISSN:0014-8962    

DOI:10.1002/fedr.19921030508

出版商:Wiley‐VCH Verlag    

年代:1992

数据来源: WILEY

摘要:

AbstractSeed morphology and seed coat sculpture of 14 native species ofErodiumL'HERIT. (Geraniaceae) in Egypt are investigated. Characters of taxonomic value are: size and shape, epidermal cell patterns as seen by SEM, anticlinal cell boundaries and periclinal cell wall.Erodium oxyrrhynchum, E. arborescens, E. gruinum, andE. ciconiumprove that, they have defined extra anticlinal cell boundaries.

ISSN:0014-8962    

DOI:10.1002/fedr.19921030509

出版商:Wiley‐VCH Verlag    

年代:1992

数据来源: WILEY

摘要:

AbstractThe leaves of fourteen species ofIpomoeahave been analysed for amino acids. A total of 27 amino acids have been identified, including 14 protein 13 non‐protein ones. The dendrogram of cluster analysis indicates thatIpomoeais a heterogeneous taxon and shows eleven species‐clusters. The present data suggests thatMerremia tuberosais an integral constituent ofIpomoeaandQuamoclitcannot be treated as a distinct genus. The treatment ofIpomoea batatasunder a separate section is justif

ISSN:0014-8962    

DOI:10.1002/fedr.19921030510

出版商:Wiley‐VCH Verlag    

年代:1992

数据来源: WILEY

ISSN:0014-8962    

DOI:10.1002/fedr.19921030511

出版商:Wiley‐VCH Verlag    

年代:1992

数据来源: WILEY