GrassBase - The Online World Grass Flora


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

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

Chusquea ramosissima

HABIT Perennial. Culms erect, or scandent; 400–1000 cm long; 15 mm diam.; woody; without nodal roots. Culm-internodes terete; solid; 5–10 cm long; smooth; distally glabrous. Lateral branches dendroid. Branch complement many; in a clump. Culm-sheath blade lanceolate; 10–15 cm long. Leaf-sheaths without keel. Leaf-sheath oral hairs ciliate. Ligule an eciliate membrane; 1–1.5 mm long; obtuse. Collar with external ligule. Leaf-blade base symmetrical; with a brief petiole-like connection to sheath; petiole 0.1–0.2 cm long; petiole pubescent. Leaf-blades deciduous at the ligule; linear, or lanceolate; 5–9 cm long; 6–17 mm wide. Leaf-blade venation with 8–10 secondary veins; with obscure cross veins. Leaf-blade surface glabrous. Leaf-blade margins scabrous.

INFLORESCENCE Inflorescence a panicle; embraced at base by subtending leaf.

Panicle open; oblong; secund; 2–2.5 cm long; bearing few spikelets. Primary panicle branches indistinct the panicle almost racemose. Panicle axis pubescent.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; acuminate; 6–9 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; shorter than spikelet; thinner than fertile lemma. Lower glume orbicular; 0.5–1 mm long; 1 length of upper glume; membranous; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume orbicular; 0.5–1 mm long; 0.05–0.1 length of adjacent fertile lemma; without keels; 0 -veined. Upper glume primary vein absent. Upper glume lateral veins absent. Upper glume apex obtuse.

FLORETS Basal sterile florets similar; barren; without significant palea; attached to and deciduous with the fertile. Lemma of lower sterile floret ovate; 0.66 length of fertile lemma; chartaceous; ciliate on margins; truncate. Lemma of upper sterile floret ovate; 1 length of lower sterile floret; chartaceous; ciliate on margins; acute. Fertile lemma ovate; 7–9 mm long; coriaceous; yellow; without keel. Lemma apex acute.

FLOWER Lodicules 3. Anthers 3. Stigmas 2.

FRUIT Caryopsis with adherent pericarp; apex unappendaged.

DISTRIBUTION South America: western South America, Brazil, and southern South America.

NOTES Bambuseae. Fl Cat 1995.

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