Danthonia compressa |
|
---|---|
danthonie comprimée, flattened oatgrass |
|
Culms | 40-80 cm, disarticulating at the nodes when mature. |
Sheaths | glabrous, rarely sparsely pilose, usually reddish above the nodes; blades to 30 cm long, 2-4 mm wide, flexible but not curled at maturity, glabrous, sometimes scabrous, uppermost cauline blades erect to ascending. |
Inflorescences | with (4)6-17 spikelets; branches usually flexible, usually divergent, sometimes strongly so, after anthesis; lower branches with 2-3 spikelets; pedicels on the lowest branch as long as or longer than the spikelets. |
Spikelets | (7)10-16 mm. |
Caryopses | 1.7-2.6 mm long, 0.7-1.1 mm wide. |
Calluses | of middle florets about as long as wide, convex abaxially; lemma bodies 2.5-5 mm, pilose over the back, sometimes sparsely so, margins pilose to beyond midlength, distal hairs 0.5-2 mm, apical teeth 2-4 mm, aristate, (1/2)2/3 or more as long as the lemma bodies; awns 6-10 mm; anthers to 2.2 mm. |
2n | = 36. |
Danthonia compressa |
|
Distribution |
AK; AL; AR; CT; DC; DE; GA; KY; MA; MD; ME; MI; NC; NH; NJ; NY; OH; PA; RI; SC; TN; VA; VT; WV; NS; ON; PE; QC
|
Discussion | Danthonia compressa grows in open and semi-shaded areas, including meadows, open woods, and woodland openings. Although not a true pioneer species, it may sometimes occur as a weed in perennial crops. It is restricted to eastern North America. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 303. |
Parent taxa | Poaceae > subfam. Danthonioideae > tribe Danthonieae > Danthonia |
Sibling taxa | |
Synonyms | D. alleni |
Name authority | Austin |
Web links |