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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.
Deyeuxia pulchella
HABIT Perennial; caespitose. Butt sheaths persistent and investing base of culm; with compacted dead sheaths. Culms erect; 15–30 cm long. Lateral branches lacking. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; 1 mm long. Leaf-blades flat, or involute; 13.5 cm long; 2.5–3 mm wide. Leaf-blade surface pilose; sparsely hairy; hairy adaxially. Leaf-blade margins scaberulous.
INFLORESCENCE Inflorescence a panicle.
Panicle contracted; oblong; equilateral; 2.5–5 cm long. Panicle branches scaberulous.
Spikelets solitary. Fertile spikelets pedicelled. Pedicels scaberulous.
FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 4–5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose.
GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 4–4.5 mm long; 0.9–1 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume surface asperulous. Lower glume apex acuminate. Upper glume lanceolate; 4–5 mm long; 1–1.2 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume surface asperulous. Upper glume apex acuminate.
FLORETS Fertile lemma oblong, or ovate; 4 mm long; membranous; without keel; 5 -veined. Lemma apex dentate; 4 -fid; awned; 1 -awned. Principal lemma awn dorsal; arising 0.66 way up back of lemma; 3 mm long overall. Palea 3 mm long; hyaline; 2 -veined. Rhachilla extension 1.5–2 mm long; pilose.
FLOWER Lodicules 2. Anthers 3; 2 mm long. Stigmas 2.
FRUIT Caryopsis with adherent pericarp. Hilum punctiform.
DISTRIBUTION Asia-temperate: China. Asia-tropical: India.
NOTES Aveneae. Fl Assam 1993.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.