Sinobambusa baccanensis

HABIT Perennial. Rhizomes elongated; leptomorph. Culms erect; 500–600 cm long; woody; without nodal roots. Culm-internodes channelled. Lateral branches dendroid. Branch complement three; in a horizontal line. Leaves cauline; 5 per branch. Leaf-sheaths glabrous on surface; outer margin hairy. Leaf-sheath oral hairs setose. Leaf-sheath auricles absent. Ligule an eciliate membrane; 0.5–0.8 mm long; truncate. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.3–0.5 cm long; petiole glabrous. Leaf-blades lanceolate; 18–20 cm long; 25–28 mm wide. Leaf-blade venation with 10–12 secondary veins; with obscure cross veins. Leaf-blade surface glabrous. Leaf-blade apex acuminate.

INFLORESCENCE Synflorescence bractiferous; fasciculate; with glumaceous subtending bracts; with axillary buds at base of spikelet; prophyllate below lateral spikelets.

Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 7–12 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 60–80 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes one the lower absent or obscure; persistent; shorter than spikelet. Upper glume lanceolate; 11 mm long; chartaceous; without keels. Upper glume surface glabrous. Upper glume apex acute.

FLORETS Fertile lemma lanceolate; 13–14 mm long; chartaceous; without keel; 15–17 -veined. Lemma surface glabrous. Lemma apex acute; mucronate. Palea 8–9 mm long; chartaceous. Palea keels ciliate. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 3; veined; ciliate. Anthers 3. Stigmas 3.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-tropical: Indo-China.

NOTES Arundinarieae. Nguyen 2002.

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