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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.
Dissanthelium peruvianum
HABIT Annual. Culms geniculately ascending; 2.5–13 cm long. Ligule an eciliate membrane; 1–4 mm long. Leaf-blades flat; 1–4 cm long; 1.5–3 mm wide. Leaf-blade surface glabrous.
INFLORESCENCE Inflorescence a panicle; shorter than basal leaves.
Panicle spiciform; oblong; 1–3.5 cm long; 0.4–0.8 cm wide. Primary panicle branches appressed.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; 2.8–3.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 0.3–0.4 mm long.
GLUMES Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume ovate; 1 length of upper glume; chartaceous; 1-keeled; 3 -veined. Lower glume primary vein smooth, or scaberulous. Lower glume apex acute. Upper glume ovate; 2.8–3.5 mm long; 1.3–1.4 length of adjacent fertile lemma; chartaceous; 1-keeled; 3 -veined. Upper glume primary vein smooth, or scaberulous. Upper glume apex acute.
FLORETS Fertile lemma ovate; 2.2–2.5 mm long; chartaceous; keeled; 3 -veined. Lemma lateral veins close to margins. Lemma surface smooth; glabrous. Lemma apex obtuse.
FLOWER Anthers 3; 0.3 mm long. Ovary glabrous.
FRUIT Endosperm farinose.
DISTRIBUTION South America: western South America.
NOTES Aveneae. Swallen.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.