Colpodium lanatiflorum

HABIT Perennial. Rhizomes elongated. Culms erect, or geniculately ascending; 20–30 cm long. Ligule an eciliate membrane; lacerate. Leaf-blades flat, or conduplicate; 2–12 cm long; 2–3 mm wide. Leaf-blade surface scaberulous; rough adaxially.

INFLORESCENCE Inflorescence a panicle.

Panicle open; oblong; 4–8 cm long; 2–4 cm wide.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 3–4 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 5–7 mm long; 3–4 mm wide; breaking up at maturity; disarticulating below each fertile floret. Floret callus woolly.

GLUMES Glumes persistent; similar; shorter than spikelet; similar to fertile lemma in texture. Lower glume ovate; 0.6–0.8 length of upper glume; membranous; much thinner above; 1-keeled; keeled below; 3 -veined. Lower glume lateral veins all falling short of apex. Lower glume apex obtuse. Upper glume ovate; 1 length of adjacent fertile lemma; membranous; much thinner above; with hyaline margins; 1-keeled; keeled below; 3 -veined. Upper glume apex obtuse.

FLORETS Fertile lemma elliptic; 3.5–5 mm long; keeled; 3 -veined. Lemma lateral veins obscure; less than two thirds length of lemma. Lemma surface pubescent; hairy below; hairy on veins. Lemma apex erose; obtuse; muticous, or mucronate (0.2–0.5mm). Palea keels smooth; eciliate. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Anthers 3.

FRUIT Hilum elliptic.

DISTRIBUTION Asia-temperate: Siberia.

NOTES Poeae. WDC.

Please cite this publication as detailed in How to Cite Version: 3rd February 2016.