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Descriptions

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

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

Colanthelia cingulata

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms scandent; 800–1000 cm long; 15–21 mm diam.; woody. Culm-internodes terete; hollow. Culm-nodes with distinct supra-nodal ridge. Lateral branches dendroid. Bud complement 1. Branch complement several; in a horizontal line; with 1 branch dominant; thinner than stem. Culm-sheaths deciduous but leaving a persistent girdle; pilose; without auricles; setose on shoulders. Culm-sheath blade linear, or lanceolate; erect; acuminate. Leaf-sheath oral hairs setose; pale. Ligule a ciliolate membrane. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate; 5–13 cm long; 8–17 mm wide. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 5–9 cm long. Primary panicle branches spreading. Panicle branches pilose; with prominent pulvini.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 3–7 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 30–40 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes eventually visible between lemmas.

GLUMES Glumes two, or several; 2–3 empty glumes; persistent; similar; shorter than spikelet. Lower glume oblong; 4–5 mm long; 0.6–1 length of upper glume; chartaceous; without keels; 5 -veined. Lower glume surface pubescent. Lower glume apex acute. Upper glume oblong; 5–6 mm long; 0.5–0.7 length of adjacent fertile lemma; chartaceous; without keels; 5 -veined. Upper glume surface pubescent. Upper glume apex acute.

FLORETS Fertile lemma elliptic; 7–9 mm long; purple; keeled; 5–7 -veined. Lemma apex obtuse. Palea 0.9 length of lemma; 2 -veined. Palea keels ciliate. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 3; ovate; membranous; ciliate. Anthers 3. Stigmas 2.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION South America: Brazil.

NOTES Bambuseae. Fl Cat.

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