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Descriptions

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

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

Chusquea tenuiglumis

HABIT Perennial. Culms arching, or scandent; 200–800 cm long; 5–7 mm diam.; woody; without nodal roots. Culm-internodes terete; solid; concolorous; distally glabrous. Culm-nodes without obvious supra-nodal ridge. Lateral branches dendroid; infravaginal. Branch complement many; in a horizontal line; with 1 branch dominant. Culm-sheaths 17–20 cm long; glabrous, or hispid. Culm-sheath blade triangular; deciduous; reflexed; 17–20 cm long. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; 10–11 mm long; acuminate. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate; 19–20.5 cm long; 18–28 mm wide. Leaf-blade venation without cross veins. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; linear; 5–10 cm long.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 8.4–11.9 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 0.6–1.2 mm long; membranous; without keels. Lower glume apex obtuse. Upper glume ovate; 0.6–1.2 mm long; 0.1 length of adjacent fertile lemma; membranous; without keels. Upper glume apex obtuse.

FLORETS Basal sterile florets barren; without significant palea; attached to and deciduous with the fertile. Lemma of lower sterile floret ovate; 1–6.7 mm long; 0.5–0.6 length of spikelet; chartaceous; acuminate. Lemma of upper sterile floret ovate; 6.2–6.9 mm long; chartaceous; acuminate. Fertile lemma ovate; 8–11 mm long; coriaceous; without keel. Lemma apex acute.

FLOWER Lodicules 3. Anthers 3. Stigmas 2.

FRUIT Caryopsis with adherent pericarp; apex unappendaged.

DISTRIBUTION South America: Brazil.

NOTES Bambuseae. Fl Sao Paulo 2001.

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