1 | Plant annual |
1' | Plant perennial |
2 | Plants with obvious creeping rhizomes; awn of lemma 2.5-5 mm long, not more than half as long as lemma body |
2' | Plants caespitose or with very short rhizomes; awn of lemma more than half as long lemma body |
3 | Leaf blades dark or light green, soft and thin, adaxially with narrow and low ribs; racemes nodding; awn of lemma up to 12(-15) mm long, usually distinctly longer than lemma body |
3' | Leaf blades glaucous green, rather firm, adaxially with rather broad and more prominent ribs; racemes erect; awn of lemma up to 10 mm long, as long as or shorter than lemma body |