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GrassBase - The Online World Grass Flora
Descriptions
W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson
© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.
Colpodium violaceum
HABIT Perennial; caespitose. Stolons present. Culms erect; 7–15 cm long. Ligule an eciliate membrane. Leaf-blades conduplicate; 2–4 cm long; 0.5–1 mm wide. Leaf-blade surface glabrous.
INFLORESCENCE Inflorescence a panicle.
Panicle open; pyramidal; 2–4 cm long; 1–3 cm wide. Primary panicle branches spreading; 2–3 -nate.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets cuneate; laterally compressed; 3–3.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous.
GLUMES Glumes persistent; similar; shorter than spikelet; similar to fertile lemma in texture; gaping. Lower glume elliptic; 2.75–3 mm long; 1 length of upper glume; membranous; much thinner above; much thinner on margins; purple; 1-keeled; keeled below; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume elliptic; 2.75–3 mm long; 0.75–0.8 length of adjacent fertile lemma; membranous; much thinner above; with hyaline margins; purple; 1-keeled; keeled below; 3 -veined. Upper glume lateral veins all falling short of apex. Upper glume apex obtuse.
FLORETS Fertile lemma elliptic; 3.5 mm long; membranous; much thinner above; purple; keeled; 3 -veined. Lemma lateral veins less than two thirds length of lemma. Lemma surface glabrous. Lemma apex erose; obtuse. Palea keels smooth; eciliate.
FLOWER Anthers 3.
FRUIT Hilum elliptic.
DISTRIBUTION Asia-temperate: western Asia.
NOTES Poeae. Fl Iran 1993.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.