Notes on Cynanchum and Pentarrhinum (Apocynaceae: Asclepiadoideae) in Tropical Africa

Critical re-examination of the type of Cynanchum clavidens N. E. Br. has resulted in revised synonymy for C. hastifolium K. Schum. and the description of a new subspecies, C. hastifolium subsp. longirostrum Goyder. The geographical and morphological pattern of variation showed by another species pai...

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Bibliographic Details
Published inKew bulletin Vol. 63; no. 3; pp. 463 - 466
Main Authors Goyder, D. J., Liede-Schumann, S.
Format Journal Article
LanguageEnglish
Published London Springer 01.09.2008
Springer-Verlag
Subjects
Appendages
Biomedical and Life Sciences
Boards of trustees
Botanical gardens
Cheek
Flower buds
Flowers
Holotypes
Isotypes
Life Sciences
Plant Ecology
Plant Sciences
Plant Systematics/Taxonomy/Biogeography
Plants
Taxa
nomenclature
taxonomy
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Summary:Critical re-examination of the type of Cynanchum clavidens N. E. Br. has resulted in revised synonymy for C. hastifolium K. Schum. and the description of a new subspecies, C. hastifolium subsp. longirostrum Goyder. The geographical and morphological pattern of variation showed by another species pair, C. gerrardii (Harv.) Liede and C. lenewtonii Liede, is comparable to that shown by the two subspecies of C. hastifolium, so C. lenewtonii is reduced to subspecific rank under C. gerrardii. Finally, C. ledermannii Schltr. is transferred to Pentarrhinum E. Mey., and P. abyssinicum Decne. subsp. ijimense Goyder placed in synonymy with it.
ISSN:0075-5974
1874-933X
DOI:10.1007/s12225-008-9048-4