Comparison Chart for Species of Echinochloa
Character |
|||||
spikelet size |
2–3 mm long x 1–1.5 mm wide
|
3–5 mm long x 1.1–2.3 mm wide |
2–3.5(4) mm long x 1.2–1.5 mm wide |
2.5–3.8 mm long x 1.5–2 mm wide |
3.7–7 mm long x 1.9–2.5 mm wide |
fertile lemma apex |
withered, typically glabrous |
withered, hairy with line of hairs at base of apex |
acute to acuminate, withered, can be hairy but hairs not forming a line at base of apex |
 acute to acuminate, slightly withered, can be hairy but hairs not forming a line at base of apex |
 acute to cuspidate, slightly withered, typically glabrous |
sterile lemma awn length |
0 mm |
0–50 mm |
(0)1–10(15) mm |
(0)5–10 mm |
(0)5–50 mm |
glumes or sterile floret bracts purplish |
yes or no |
yes or no |
typically no |
typically yes |
typically no |
