Taxonomic Remark and Typification of Helictotrichon sempervirens (Poaceae, Aveninae)
Helictotrichon sempervirens (Poaceae), a common ornamental grass cultivated in rock gardens, described from southern France, is discussed and typified. The name is originally based on the basionym Avena sempervirens . The designation of a lectotype is based on an analysis of original material stored in t...