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.

Chimonobambusa lactistriata

HABIT Perennial. Rhizomes elongated; leptomorph. Culms erect; 250–500 cm long; 12–20 mm diam.; woody; with root thorns from the nodes. Culm-internodes terete; hollow; 10–12 cm long; papillose; distally hispid; with tubercle-based hairs. Lateral branches dendroid. Culm-sheaths deciduous; 1 length of internode; chartaceous; green and purple; striped; glabrous, or hispid; hairy on margins. Culm-sheath ligule 1 mm high. Culm-sheath blade linear; erect; 0.4–2 cm long; 1.2–2 mm wide. Leaves cauline; 1–2(–3) per branch. Leaf-sheath oral hairs scanty; 1 mm long. Leaf-sheath auricles absent. Ligule a ciliolate membrane; 0.5 mm long. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades deciduous at the ligule; lanceolate; 7–11 cm long; 8–13 mm wide; mid-green and glaucous; discolorous with last colour beneath. Leaf-blade venation with 6–10 secondary veins; with obscure cross veins. Leaf-blade surface glabrous. Leaf-blade apex acuminate.

INFLORESCENCE Synflorescence bractiferous; clustered at the nodes; in untidy tufts; with glumaceous subtending bracts; without axillary buds at base of spikelet; without prophylls; leafless between clusters.

Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 3–6 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 12–41 mm long; 2–3 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 3–8 mm long.

GLUMES Glumes several; 2–5 empty glumes; persistent; similar; shorter than spikelet. Lower glume oblong; 2.5 mm long; membranous; without keels. Lower glume apex acute. Upper glume oblong; 9.5 mm long; membranous; without keels; 11 -veined. Upper glume apex acute.

FLORETS Fertile lemma ovate; 9–11 mm long; membranous; without keel; 11–13 -veined. Lemma apex apiculate. Palea 8–10 mm long. Palea keels eciliate, or ciliolate. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 3; 2 mm long; ciliate. Anthers 3; 5–6 mm long; yellow, or purple. Stigmas 2.

FRUIT Caryopsis with adherent pericarp; ellipsoid; 5–9 mm long.

DISTRIBUTION Asia-temperate: China.

NOTES Arundinarieae. Yi 2002.

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