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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.
Gigantochloa multifloscula
HABIT Perennial; caespitose; clumped densely. Rhizomes short; pachymorph. Culms erect; 400–800 cm long; 30–50 mm diam.; woody. Culm-internodes terete; hollow; 20–30 cm long. Culm-nodes swollen. Lateral branches dendroid. Branch complement three; with subequal branches. Culm-sheaths deciduous but leaving a persistent girdle; 13–15 cm long; 1.4 times as long as wide; hispid; with appressed hairs; with dark brown hairs, or black hairs; hairy on margins; auriculate; with 2 mm high auricles; with 1 mm wide auricles. Culm-sheath ligule 1–2 mm high. Culm-sheath blade triangular; erect; 8–10 cm long; 25–35 mm wide; hispid. Leaves 5 per branch. Leaf-sheath auricles absent. Ligule an eciliate membrane; 2 mm long. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.3 cm long. Leaf-blades oblong, or ovate; 24–28 cm long; 30–35 mm wide. Leaf-blade venation with 18–20 secondary veins. Leaf-blade surface pilose; hairy adaxially.
INFLORESCENCE Synflorescence bractiferous; clustered at the nodes; in untidy tufts; with glumaceous subtending bracts; with axillary buds at base of spikelet; prophyllate below lateral spikelets; leafless between clusters.
Fertile spikelets sessile.
FERTILE SPIKELETS Spikelets comprising 4–5 fertile florets; with diminished florets at the apex. Spikelets oblong; subterete; 10 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Rhachilla internodes suppressed between florets.
GLUMES Glumes two, or several; 2–3 empty glumes; persistent; similar; shorter than spikelet. Upper glume ovate, or orbicular; 8–9 mm long.
FLORETS Fertile florets increasing in size upwards. Fertile lemma ovate, or orbicular; 8–9 mm long; 8–9 mm wide; coriaceous; without keel; 36–40 -veined. Lemma margins pilose; hairy below. Lemma apex obtuse; mucronate. Palea lanceolate, or oblong; 5–7 mm long; 1 length of lemma; 2-keeled. Palea surface pilose; hairy on margins. Palea apex dentate; 2 -fid.
FLOWER Lodicules absent. Anthers 6. Filaments united in a tube. Stigmas 1; plumose. Ovary pubescent on apex.
DISTRIBUTION Asia-tropical: Indo-China.
NOTES Bambuseae. Nguyen 2002.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
