GrassBase - The Online World Grass Flora


W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Colpodium subornatum

HABIT Perennial; caespitose. Butt sheaths thickened and forming a bulb. Basal innovations intravaginal. Culms erect; 15–40 cm long. Culm-internodes distally glabrous. Leaf-sheaths open for most of their length; with 0.15–0.25 of their length closed; glabrous on surface. Ligule an eciliate membrane. Leaf-blades 2–5 cm long; 1 mm wide. Leaf-blade surface glabrous. Leaf-blade margins scaberulous.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; dense; 3–6 cm long.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2–3 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; 3.5–4.5 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; shorter than spikelet; similar to fertile lemma in texture. Lower glume 0.7–0.8 length of upper glume; membranous; much thinner above; much thinner on margins; 1 -veined. Lower glume lateral veins absent. Upper glume elliptic; 0.8–1 length of adjacent fertile lemma; membranous; much thinner above; with hyaline margins; 1-keeled; keeled below; 3 -veined. Upper glume lateral veins all falling short of apex. Upper glume apex acute.

FLORETS Fertile lemma oblong; 2.6–3.5 mm long; membranous; much thinner above; keeled; 5 -veined. Lemma midvein pubescent. Lemma lateral veins less than two thirds length of lemma. Lemma surface pubescent; hairy on veins. Lemma apex erose; truncate. Palea keels ciliolate.

FLOWER Anthers 3; 2.7 mm long.

FRUIT Caryopsis with adherent pericarp; glabrous. Hilum elliptic; 0.2–0.25 length of caryopsis.

DISTRIBUTION Asia-temperate: Caucasus.

NOTES Poeae. Alexeev 2005.

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