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Descriptions

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

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

Yushania lineolata

HABIT Perennial. Rhizomes short (9–16 cm); pachymorph. Culms erect; 350 cm long; 9–15 mm diam.; woody. Culm-internodes terete; hollow; 16–24 cm long; distally glabrous. Culm-nodes with distinct supra-nodal ridge; pubescent. Lateral branches dendroid. Branch complement three, or several. Culm-sheaths tardily deciduous; 0.66 length of internode; coriaceous; green and brown; distinctly mottled with last colour; glabrous; hairy on margins; convex at apex; auriculate; setose on shoulders; shoulders with straight hairs; shoulders with 4–9 mm long hairs. Culm-sheath ligule 2–3 mm high. Culm-sheath blade linear, or lanceolate. Leaves 1–3 per branch. Leaf-sheaths glabrous on surface. Leaf-sheath oral hairs lacking, or setose. Leaf-sheath auricles absent. Ligule a ciliolate membrane; 1 mm long; truncate. Leaf-blade base cuneate; with a brief petiole-like connection to sheath. Leaf-blades deciduous at the ligule; lanceolate; 3.5–9.5 cm long; 4–11 mm wide; light green. Leaf-blade venation with 6–8 secondary veins; with distinct cross veins. Leaf-blade surface glabrous. Leaf-blade margins scabrous.

INFLORESCENCE Inflorescence a panicle; comprising 6–12 fertile spikelets.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 3–7 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 24–40 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 4–5 mm long; pubescent.

GLUMES Glumes persistent; similar; shorter than spikelet; similar to fertile lemma in texture. Lower glume ovate; herbaceous; without keels. Upper glume lanceolate; herbaceous; without keels.

FLORETS Fertile lemma ovate; herbaceous; purple; without keel. Lemma surface pubescent; hairy at base. Lemma margins ciliate. Lemma apex obtuse, or acuminate. Palea keels ciliate. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 3. Anthers 3. Stigmas 3. Ovary glabrous.

DISTRIBUTION Asia-temperate: China.

NOTES Arundinarieae. Fl China 2006.

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