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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.
HABIT Perennial. Rhizomes elongated; leptomorph. Culms erect; 200–300 cm long; 10–15 mm diam.; woody; without nodal roots. Culm-internodes terete; with small lumen; purple; smooth. Culm-nodes swollen. Lateral branches dendroid. Branch complement three, or several; in a horizontal line; with subequal branches; thinner than stem. Culm-sheaths persistent; chartaceous; purple; distinctly mottled with last colour; pubescent; hairy at the base; with yellow hairs; glabrous on shoulders. Culm-sheath blade inconspicuous. Leaves cauline; 3–4 per branch. Leaf-sheath oral hairs setose. Ligule a ciliolate membrane. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades deciduous at the ligule; lanceolate; 6–15 cm long; 8–12 mm wide. Leaf-blade venation with distinct cross veins.
INFLORESCENCE Synflorescence bractiferous; scanty; with glumaceous subtending bracts; without axillary buds at base of spikelet; without prophylls.
Fertile spikelets sessile.
FERTILE SPIKELETS Spikelets comprising 4–7 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 20–40 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 3–4 mm long; eventually visible between lemmas.
GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 6–8 mm long; 1 length of upper glume; membranous; without keels; 5 -veined. Lower glume apex acute. Upper glume oblong; 6–8 mm long; 1 length of adjacent fertile lemma; membranous; without keels; 5 -veined. Upper glume apex acute.
FLORETS Fertile lemma oblong; 6–7 mm long; membranous; without keel; 5–7 -veined. Lemma lateral veins with cross-veins. Lemma apex acute. Palea 1 length of lemma; 8 -veined. Apical sterile florets resembling fertile though underdeveloped.
FLOWER Lodicules 3; 2 mm long; ciliate. Anthers 3; 3.5–4 mm long. Stigmas 2.
FRUIT Caryopsis with adherent pericarp; 6 mm long.
DISTRIBUTION Asia-temperate: Caucasus, China, and eastern Asia.
NOTES Arundinarieae. WDC.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.