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Descriptions

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

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

Chimonocalamus gallatlyi

HABIT Perennial; caespitose; clumped densely. Rhizomes short; pachymorph. Culms erect; 450–750 cm long; 20–25 mm diam.; woody; with root thorns from the nodes. Culm-internodes terete; hollow; 20–30 cm long; mid-green; distally glabrous. Lateral branches dendroid. Culm-sheaths 10–15 cm long; 3.5 times as long as wide; chartaceous. Culm-sheath blade lanceolate; 3–5 cm long. Leaf-sheaths striately veined. Leaf-sheath oral hairs scanty. Ligule an eciliate membrane; pubescent on abaxial surface. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.3 cm long. Leaf-blades deciduous at the ligule; lanceolate, or oblong; 8–10 cm long; 15–20 mm wide; light green. Leaf-blade venation with 12 secondary veins; with distinct cross veins. Leaf-blade margins scabrous. Leaf-blade apex acuminate; filiform; antrorsely scabrous.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 5–7 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 40–60 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes flattened; 7 mm long; eventually visible between lemmas; pilose; hairy all along but hairs longer above.

GLUMES Glumes persistent; similar; shorter than spikelet; similar to fertile lemma in texture. Lower glume lanceolate; 5 mm long; chartaceous; 1-keeled; 3 -veined. Lower glume margins ciliate. Lower glume apex acute. Upper glume lanceolate, or ovate; 7 mm long; chartaceous; without keels; 5 -veined. Upper glume margins ciliate. Upper glume apex acute; mucronate.

FLORETS Fertile lemma lanceolate, or ovate; 11 mm long; chartaceous; without keel; 9 -veined. Lemma margins ciliate; hairy above. Lemma apex acute. Palea 12 mm long; 1.1 length of lemma. Palea apex dentate; 2 -fid; pubescent. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 3; 2–3 mm long; membranous; veined; ciliate. Anthers 3; 6 mm long. Stigmas 3. Ovary glabrous.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-tropical: Indo-China.

NOTES Arundinarieae. Gr Burma 1997.

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