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Descriptions

W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Eulalia pruinosa

HABIT Perennial; caespitose. Butt sheaths pubescent, or pilose. Culms 50–180 cm long; 3 mm diam. Culm-internodes distally glabrous. Leaf-sheaths subequal to internodes; smooth; glabrous on surface. Leaf-sheath oral hairs bearded. Ligule a ciliolate membrane; 1 mm long. Leaf-blades linear, or lanceolate; 10–20 cm long; 8–10 mm wide; mid-green and glaucous; discolorous with last colour beneath. Leaf-blade surface pubescent; densely hairy; hairy on both sides. Leaf-blade apex acute.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 5–7; digitate; 11–17 cm long. Rhachis fragile at the nodes; subterete; ciliate on margins. Rhachis hairs white, or purple. Rhachis internodes linear; 0.75 length of fertile spikelet. Rhachis internode tip transverse.

Spikelets in pairs. Fertile spikelets sessile and pedicelled; 2 in the cluster. Pedicels linear; angular; 0.75 length of fertile spikelet; ciliate.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 4.5 mm long; falling entire; deciduous from the base, or with accessory branch structures. Spikelet callus base obtuse; attached transversely.

GLUMES Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume elliptic; 1 length of spikelet; chartaceous; 2-keeled. Lower glume primary vein scabrous (above). Lower glume lateral veins transversely connected at apex; intercarinal veins distinct; intercarinal veins 2 in number. Lower glume surface concave; villous; hairy below. Lower glume margins ciliate (above). Lower glume apex emarginate, or truncate. Upper glume elliptic. Upper glume muticous.

FLORETS Basal sterile florets with vestigial lower floret. Fertile lemma ovate; 1 mm long; hyaline; without keel. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 9–13 mm long overall; with twisted column. Column of lemma awn glabrous. Palea absent or minute.

DISTRIBUTION Asia-temperate: China.

NOTES Andropogoneae. Fl China 2003.

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