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Descriptions

W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Cyrtochloa mindoroensis

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms 20 mm diam.; woody. Culm-internodes terete; with small lumen. Lateral branches dendroid. Leaf-sheaths glabrous on surface, or pilose; hairs white; outer margin hairy. Leaf-sheath oral hairs ciliate. Leaf-sheath auricles falcate; 1 mm long. Ligule a ciliolate membrane. Leaf-blade base asymmetrical; with a brief petiole-like connection to sheath; petiole 0.4 cm long. Leaf-blades lanceolate; 12–21 cm long; 15–24 mm wide; stiff. Leaf-blade surface glabrous. Leaf-blade margins serrulate.

INFLORESCENCE Synflorescence bractiferous; clustered at the nodes; in oblong clusters; 2–3 cm long; dense; glabrous on internodes; with spathaceous subtending bracts; bracts 7–15 mm long; with axillary buds at base of spikelet; prophyllate below lateral spikelets; leafless between clusters; 90 cm long overall.

Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 5–6 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes two; persistent; shorter than spikelet. Lower glume ovate; 3 mm long; chartaceous; without keels; 7 -veined. Lower glume surface glabrous. Lower glume margins ciliolate. Lower glume apex acuminate. Upper glume ovate; 3 mm long; chartaceous; without keels; 7 -veined. Upper glume surface glabrous. Upper glume margins ciliolate. Upper glume apex acuminate.

FLORETS Fertile lemma ovate; 4 mm long; 2.5 mm wide; chartaceous; without keel; 7 -veined. Lemma surface glabrous. Lemma margins convolute; covering most of palea. Lemma apex setaceously attenuate. Palea tightly convolute around flower; 4 mm long; chartaceous; 6 -veined; without keels. Palea surface glabrous. Palea apex dentate; 2 -fid. Apical sterile florets 1 in number; barren; lanceolate (an empty lemma); 2 mm long.

FLOWER Lodicules 3; ciliate. Anthers 6; anther tip apiculate. Stigmas 3. Ovary with a steeple-like appendage.

FRUIT Caryopsis with fleshy pericarp; orbicular; isodiametric (globose); 4 mm long.

DISTRIBUTION Asia-tropical: Malesia.

NOTES Bambuseae. Dransfield 2004.

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