Original Research

New species of Drimia (Hyacinthaceae: Urgineoideae) allied to Drimia marginata from Western and Northern Cape, South Africa

J. C. Manning, P. Goldblatt
Bothalia | Vol 37, No 1 | a313 | DOI: https://doi.org/10.4102/abc.v37i1.313 | © 2007 J. C. Manning, P. Goldblatt | This work is licensed under CC Attribution 4.0
Submitted: 18 August 2007 | Published: 18 August 2007

About the author(s)

J. C. Manning, Compton Herbarium. South African National Biodiversity Institute, South Africa
P. Goldblatt, B.A. Krukoff Curator of African Botany, Missouri Botanical Garden, United States

Full Text:

PDF (542KB)

See Updates


Share this article

Bookmark and Share

Abstract

Plants until now identified as Drimia marginata (Thunb.) Jessop on account of their leathery, oblong to elliptical leaves with thickened, cartilaginous margins and capitate inflorescences of campanulate flowers, are shown to comprise three sets of populations separable on leaf morphology, ecology and distribution. Typical D. marginata produces 1 (2) oblong, apiculate leaves with retrorsely-scabridulous margins and occurs in fine-grained clay soils on the Hantam and Roggeveld Plateaus. Plants from Namaqualand and the Richtersveld. described here as Drimia pulchromarginata J.C.Manning & Goldblatt. occur in sandy or gravelly soils and produce 2 -4 , elliptical to suborbicular, apiculate leaves with an ornate, duplex margin: the dorsal surface bears a submarginal band of dense, velvety trichomes fringing the thickened, colliculate margin. A third series of populations from seasonally moist sandstones at higher altitude on the interior mountains of the West Coast produces2 or 3(4) narrowly oblong, obtuse leaves with a simple, papillate or colliculate margin and are recognized as D. ligulata J.C.Manning & Goldblatt. A fourth taxon with a similar capitate inflorescence of campanulate flowers produces a solitary, subterete or subclavate leaf, elliptical in section. Recorded from scattered localities in the Northern and Western Cape', it is here described as D. vermiformis J.C.Manning & Goldblatt.


Keywords

<i>Drimia</i. Jacq.; Hyacinthaceae; South Africa; taxonomy; Urgineoideae

Metrics

Total abstract views: 953
Total article views: 1736


Crossref Citations

No related citations found.