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GrassBase - The Online World Grass Flora
Descriptions
W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson
© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.
Nianhochloa bidoupensis
HABIT Perennial. Rhizomes short; pachymorph. Culms leaning; drooping at the tip; 300–800 cm long; 3–4 mm diam.; woody. Culm-internodes terete; hollow; 20–22 cm long. Lateral branches dendroid. Bud complement 1. Branch complement three, or several; in a clump; with subequal branches. Culm-sheaths deciduous; 6.5–8 cm long; 0.33 length of internode; 5–6 times as long as wide; pilose; with appressed hairs; with purple hairs; hairy on margins. Culm-sheath ligule 1 mm high; ciliolate. Culm-sheath blade triangular; erect; 2–2.5 cm long; 1–2 mm wide; with ciliate margins; acute. Leaves 8–10 per branch. Leaf-sheaths outer margin hairy. Leaf-sheath oral hairs setose; 4–6 mm long. Leaf-sheath auricles absent. Ligule a ciliolate membrane; 1 mm long. Leaf-blade base broadly rounded; with a brief petiole-like connection to sheath; petiole 0.1 cm long. Leaf-blades oblong; 14–16 cm long; 25–28 mm wide. Leaf-blade venation with 10–12 secondary veins. Leaf-blade margins scabrous.
INFLORESCENCE Synflorescence bractiferous; clustered at the nodes; in untidy tufts; lax; with axillary buds at base of spikelet; prophyllate below lateral spikelets; leafless between clusters.
FERTILE SPIKELETS Spikelets comprising (1–)2(–3) fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 10–20 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 2–3 mm long; glabrous.
GLUMES Glumes several; comprising 1–2 gemmiferous bracts; 1–3 empty glumes; persistent; similar; shorter than spikelet; thinner than fertile lemma. Upper glume ovate; 5–6 mm long. Upper glume surface pilose. Upper glume apex acuminate; mucronate.
FLORETS Fertile lemma ovate; 7–9 mm long; 3–4 mm wide; without keel; 9–10 -veined. Lemma surface glabrous. Lemma apex mucronate. Palea 1 length of lemma; hyaline; 9–10 -veined; 2-keeled. Palea surface glabrous. Apical sterile florets 1 in number; rudimentary.
FLOWER Lodicules 3; 2–3 mm long. Anthers 6; 4–5 mm long. Stigmas 3; plumose. Styles brief. Ovary pubescent on apex.
FRUIT Caryopsis with adherent pericarp; ellipsoid; 5 mm long; apex rostrate.
DISTRIBUTION Asia-tropical: Indo-China.
NOTES Bambuseae. Nguyen & Tran 2013.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
