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.

Eulalia yunnanensis

HABIT Perennial. Butt sheaths persistent and investing base of culm; with fibrous dead sheaths. Culms erect; 60 cm long; 6–7 -noded. Culm-internodes distally glabrous. Leaves without demarcation between sheath and blade. Leaf-sheaths as wide as blade at the collar; glabrous on surface; outer margin hairy. Ligule an eciliate membrane; 2 mm long; scarious; obtuse. Leaf-blades 4–15 cm long; 2–4 mm wide. Leaf-blade surface glabrous; hairless throughout, or except near base. Leaf-blade apex attenuate.

INFLORESCENCE Inflorescence composed of racemes. Peduncle pilose above.

Racemes 5–7; digitate; 8–10 cm long. Rhachis fragile at the nodes; subterete; ciliate on margins. Rhachis hairs white, or purple. Rhachis internodes linear; 3 mm long.

Spikelets in pairs. Fertile spikelets sessile and pedicelled; 2 in the cluster. Pedicels linear; angular; 4 mm long; ciliate; with white hairs, or purple hairs.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 4 mm long; falling entire; deciduous from the base, or with accessory branch structures. Spikelet callus square; 0.5 mm long; pubescent; base obtuse; attached obliquely.

GLUMES Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate, or oblong; 1 length of spikelet; chartaceous; much thinner above; 2-keeled. Lower glume surface flat; pilose; hairy at apex and at base. Lower glume hairs white, or purple. Upper glume lanceolate; chartaceous; 1-keeled. Upper glume primary vein ciliate. Upper glume surface pilose. Upper glume margins ciliate. Upper glume muticous.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret oblong, or ovate; 3 mm long; hyaline; ciliolate on margins; fringed above. Fertile lemma oblong; 2 mm long; hyaline; without keel. Lemma apex dentate; 2 -fid; incised 0.25 of lemma length; awned; 1 -awned. Principal lemma awn from a sinus; bigeniculate; 15 mm long overall; with twisted column. Middle segment of lemma awn 4 mm long. Column of lemma awn 3 mm long; glabrous. Palea ovate; 1 mm long.

FLOWER Anthers 3; 2 mm long.

DISTRIBUTION Asia-temperate: China.

NOTES Andropogoneae. Keng & Chen 1996.

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