Leptochloa dubia |
Diplachne fusca(synonym of Leptochloa fusca) |
|
---|---|---|
sprangletop |
||
Habit | Plants 5–110 cm tall. | |
Inflorescences | panicles 1.5– 72 cm × 4–22 mm; branches 3–35, 1.5–20(22) cm, spreading to reflexed. |
|
Spikelets | 5–12(14)mm with (2)3–12(20) florets. |
|
Glumes | 1-veined, glabrous, scabrous, or hairy; lower glumes 1–3(4.9) mm; upper glumes 1.8–5 mm. |
|
Caryopses | 0.8–2 mm. |
|
Ligules | 2–8 mm, membranous, attenuate, lacerate when mature; blades 3–50 cm × 2–7 mm; flat to involute, glabrous or scabrous. |
|
Lemmas | 2–6 mm, glabrous to hairy, sometimes with a dark spot at the base; tips truncate to acute, often shortly bilobed, sometimes mucronate or awned; lemma awns 0–3.5 mm. |
|
Anthers | 0.2–1 mm. |
|
2n | =20. |
|
Leptochloa dubia |
Diplachne fusca |
|
Distribution | ||
Discussion | 3 subspecies; 2 subspecies treated in Flora. Diplachne fusca can be a challenge to identify when first encountered. Its ephemeral wetland habitat and several florets per spikelet might suggest Puccinellia, and individuals with dark gray spikelets recall some species of Muhlenbergia, but the spike-like branches and the long ligules distinguish it from both these genera. |
|
Source | Flora of Oregon, volume 1, page 392 Barbara Wilson, Richard Brainerd, Nick Otting |
|
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | Leptochloa fusca | |
Web links |
|