Chusquea barbata L.G.Clark

First published in Novon 3: 232 (1993)
This species is accepted
The native range of this species is Peru. It is a bamboo and grows primarily in the wet tropical biome.

Descriptions

Morphology General Habit
Perennial. Culms woody. Culm-internodes terete; 24 cm long. Culm-nodes with distinct supra-nodal ridge. Lateral branches dendroid; extravaginal. Bud complement 20-25. Branch complement many; in a clump; thinner than stem. Leaf-sheaths antrorsely scabrous; outer margin hairy. Ligule an eciliate membrane; 1-1.5 mm long; pubescent on abaxial surface; erose. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.2 cm long; petiole pubescent. Leaf-blades lanceolate; 7.7-11.7 cm long; 6-9 mm wide. Leaf-blade venation without cross veins. Leaf-blade surface glabrous. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Synflorescence bractiferous; clustered at the nodes; in untidy tufts; with glumaceous subtending bracts; without axillary buds at base of spikelet; leafless between clusters. Fertile spikelets pedicelled. Pedicels angular; 0.5-1 mm long.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 9.1-12.1 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 9.1-12.1 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 0.1-0.3 mm long; membranous; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 0.1-0.3 mm long; without keels; 0 -veined. Upper glume primary vein absent. Upper glume lateral veins absent. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; without significant palea; attached to and deciduous with the fertile. Lemma of lower sterile floret ovate; 4.1-5.7 mm long; 0.5 length of fertile lemma; chartaceous; 7-9 -veined; scabrous; acute; mucronate. Lemma of upper sterile floret ovate; 5.7-8 mm long; chartaceous; scabrous; acute; mucronate. Fertile lemma ovate; 9.7-11.1 mm long; coriaceous; without keel; 7-9 -veined. Lemma surface scabrous; setose; hairy below. Lemma hairs red; 1 mm long. Lemma apex attenuate. Palea 8.5-9 mm long; 4-6 -veined. Palea surface scabrous; pilose; hairy on back. Palea apex with excurrent keel veins.
Morphology Reproductive morphology Flowers
Lodicules 3; 1.8-2.4 mm long; membranous; ciliate. Anthers 3; 3.7-4.4 mm long. Stigmas 2.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; apex unappendaged.
Distribution
South America: western South America.
Reference
Bambuseae. Clark 1995.
[GB]

Sources

  • GrassBase - The Online World Grass Flora

    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0