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.

Deyeuxia conferta

HABIT Perennial; caespitose. Culms erect; 60–90 cm long; 2 mm diam.; 1–2 -noded. Leaves mostly basal. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; 5–10 mm long. Leaf-blades 15–30 cm long; 2–4 mm wide; glaucous. Leaf-blade surface scabrous; glabrous, or pilose; hairy adaxially. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle spiciform; linear; continuous, or interrupted; 9–14 cm long; 1–2 cm wide.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus bearded. Floret callus hairs 1–1.1 length of lemma.

GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 5 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume lanceolate; 1.4 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acuminate.

FLORETS Fertile lemma oblong; 3.5 mm long; membranous; without keel; 5 -veined. Lemma apex erose; awned; 1 -awned. Principal lemma awn dorsal; arising 0–0.1 way up back of lemma; straight; 3–4 mm long overall; without a column. Rhachilla extension 0.5 mm long; pilose; with 1–2 mm long hairs.

FLOWER Lodicules 2. Anthers 3; 2–2.5 mm long. Stigmas 2.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform. Disseminule comprising a floret.

DISTRIBUTION Asia-temperate: China.

NOTES Aveneae. Keng 1995.

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