A cytotaxonomic revision of Drimia Jacq. (Hyacinthaceae: Urgineoideae) in India

We apply data from palynology, meiotic studies and interspecific hybridization to the taxonomy of the genus Drimia Jacq. (Hyacinthaceae: Urgineoideae) in India. We recognize eight species, seven of which are endemic to the subcontinent. The species can be grouped according to floral phenology and pa...

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Bibliographic Details
Published in:South African journal of botany 2019-07, Vol.123, p.62-86
Main Authors: Yadav, P.B., Manning, J.C., Yadav, S.R., Lekhak, M.M.
Format: Article
Language:English
Subjects:
Asparagales
Dipcadi
Drimia
Hybridization
Indian Squill
Meiosis
Pollen
Scilloideae
Taxonomy
Urginea
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Summary:We apply data from palynology, meiotic studies and interspecific hybridization to the taxonomy of the genus Drimia Jacq. (Hyacinthaceae: Urgineoideae) in India. We recognize eight species, seven of which are endemic to the subcontinent. The species can be grouped according to floral phenology and palynology into night-blooming species with meta-reticulate pollen and day-blooming species with micro-reticulate pollen. We provided a fully illustrated account of the Indian species, with full descriptions and nomenclature, an identification key and distribution maps. The new sect. Indurgia is described to accommodate the SEAsian species of Drimia. The two species Urginea polyphylla Hook.f. and U. coromandeliana Wight are identified as species of Dipcadi and are excluded from Urgineoideae. •Eight species of Drimia are native to India.•Night-blooming species have meta-reticulate pollen.•Day-blooming species have micro-reticulate pollen.•Triploid D. indica is pollen-sterile.•Urginea polyphylla and U. coromandeliana are species of Dipcadi.
ISSN:0254-6299
1727-9321
DOI:10.1016/j.sajb.2019.01.018