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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.
Ochlandra spirostylis
HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; 400–600 cm long; 25 mm diam.; woody. Culm-internodes terete; hollow; 30–47 cm long; grey; scaberulous. Lateral branches dendroid. Culm-sheaths persistent; 13–15 cm long; chartaceous; pubescent; hairy at the base; with appressed hairs; with grey hairs. Leaves cauline. Leaf-sheaths striately veined; glabrous on surface. Ligule an eciliate membrane; brown. Collar with external ligule. Leaf-blade base truncate; with a brief petiole-like connection to sheath; petiole 1 cm long; petiole glabrous. Leaf-blades lanceolate; 25–32 cm long; 45–58 mm wide. Leaf-blade midrib prominent beneath. Leaf-blade venation with 24–26 secondary veins. Leaf-blade margins scabrous. Leaf-blade apex acuminate.
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 Spikelets comprising 1 fertile florets. Spikelets lanceolate, or ovate; subterete; 15–50 mm long; 3–10 mm wide; falling entire.
GLUMES Glumes several; comprising 3 gemmiferous bracts; 3 empty glumes; similar; shorter than spikelet. Upper glume ovate; 14–30 mm long; 40–56 -veined. Upper glume surface glabrous. Upper glume margins ciliate. Upper glume apex acute; mucronate.
FLORETS Fertile lemma ovate; 31–35 mm long; 22–24 mm wide; chartaceous; without keel; 30–48 -veined. Lemma lateral veins with cross-veins. Lemma margins convolute; covering most of palea; ciliate; hairy above. Lemma apex acuminate. Palea tightly convolute around flower; 31–35 mm long; 30–48 -veined; without keels. Palea surface pilose; hairy on margins; hairy above. Palea apex emarginate; ciliate.
FLOWER Lodicules 3; 15–20 mm long; membranous; veined; ciliate; 2-toothed. Anthers 40–70; 11 mm long; anther tip with extended connective. Filaments free. Stigmas 6–8. Ovary with a steeple-like appendage (55mm); glabrous.
FRUIT Caryopsis with fleshy pericarp; ovoid; 100–105 mm long.
DISTRIBUTION Asia-tropical: India.
NOTES Bambuseae. Muktesh et al 2005.
ADDITIONAL CHARACTERS Palea with cross-veins.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
