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Issue: Vol. 246 No. 4: 16 February 2016
Type: Article
Published: 2016-02-16
DOI: 10.11646/phytotaxa.246.4.2
Page range: 248–280
Abstract views: 26
PDF downloaded: 3

A taxonomic revision of the genus Digitaria (Panicoideae: Poaceae) in mainland Southeast Asia

Applied Taxonomic Research Center, Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand.
Applied Taxonomic Research Center, Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand.
Botany, School of Natural Sciences & Trinity Centre for Biodiversity Research, Trinity College, University of Dublin, D2, Ireland.
classification conservation crabgrass ecology lectotypification Monocots Southeast Asia

Abstract

A taxonomic revision of the genus Digitaria (Poaceae) is presented for mainland Southeast Asia (Cambodia, Lao PDR, Myanmar, Peninsular Malaysia, Thailand and Vietnam). A total of 27 species (29 taxa) is enumerated. Two cultivated species, D. eriantha and D. milanjiana, are excluded from this account. A key to sections and species is provided and subgenus Leptoloma is reduced to sectional rank. Taxon descriptions include distribution and ecological data, conservation status, and notes on each species. Digitaria effusa and D. hentyi are reduced to synonyms of D. abyssinica, and D. siamensis is a synonym of D. sparsifructus. The lectotype is designated for D. stricta var. glabrescens.