Podagrostis
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Name
Podagrostis (Griseb.) Scribn. & Merr. Contr. U.S. Natl. Herb. 13 (3): 58. 1910 – Wikispecies link – Pensoft Profile
- Agrostis sect. Podagrostis Griseb. Fl. Ross. 4 (13): 436. 1852.
Type
Agrostis canina var. aequivalvis Trin. (lectotype, designated by Hitchcock 1920[1]: 127).
Description
Perennials. Leaves mainly basal; ligules membranous. Inflorescence a panicle, lax and open to contracted and spikelike. Spikelets 1-flowered, disarticulating above the glumes, laterally compressed; glumes as long as the spikelet, equal or subequal, persisting on the plant after the florets have fallen; lower glume 1- or 3-veined; upper glume 1- (2-) or 3-veined; floret subequalling to equaling the apex of the glumes; lemmas membranaceous, often slightly thicker than the glumes, dorsally rounded, 3- or 5-veined, lateral veins not evident to distinct; paleas well-developed, reaching from (2/3) ¾ to subequaling the lemma, keels obscure to distinct, glabrous, usually smooth; calluses rounded, blunt, usually glabrous, or with two short lateral tufts of hairs to 0.5 mm long in some species, abaxially smooth; rachilla prolongation present, varying from rudimentary to 2/3 the floret in length, glabrous or sometimes with short strict hairs to 0.3 mm long emerging only from the apex, smooth or scaberulous. Flowers perfect; anthers 3 in number, 0.4–2.2 mm long. Caryopses hard.
Taxon Treatment
- Sylvester, S; Cuta-Alarcon, L; Bravo-Pedraza, W; Soreng, R; 2020: Agrostis and Podagrostis (Agrostidinae, Poaceae) from páramos of Boyacá, Colombia: synoptic taxonomy including a key to Colombian species PhytoKeys, 151: 107-160. doi
Other References
- ↑ Hitchcock A (1920) The genera of grasses of the United States. United States Department of Agriculture: Bulletin (1915-23) 772: 1–302.