Poaceae
Chusquea

Chusquea angusta (Swallen) L.G.Clark

First published in Syst. Bot. 34: 680 (2009)
This species is accepted
The native range of this species is Colombia (Santander) to Guyana. It is a bamboo and grows primarily in the wet tropical biome.

Descriptions

Distribution
Biogeografic region: Andean. Native to Colombia. Colombian departments: Santander.
Habit
Herb.
[UPFC]

Morphology General Habit
Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; reed-like; 250 cm long; woody. Culm-internodes terete; solid. Lateral branches lacking. Leaf-sheaths 35 cm long; longer than adjacent culm internode. Leaf-sheath oral hairs lacking. Leaf-sheath auricles erect. Ligule an eciliate membrane; 10 mm long; with a secondary abaxial membrane (30mm long). Leaf-blade base with a false petiole (lower leaves); petiole 50 cm long. Leaf-blades lanceolate; 80-165 cm long; 60-65 mm wide; coriaceous.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; lanceolate; 75 cm long; 3 cm wide; contracted about primary branches. Primary panicle branches ascending; sparsely divided; 2-4 cm long; bearing spikelets almost to the base. Panicle branches stiff. Spikelets solitary. Fertile spikelets pedicelled, or sessile.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 8-9 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; 8-9 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet. Lower glume ovate; 1-1.5 mm long; 0.5-0.6 length of upper glume; coriaceous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume ovate; 2-2.5 mm long; 0.5 length of adjacent fertile lemma; coriaceous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex obtuse.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets similar; barren; without significant palea; attached to and deciduous with the fertile. Lemma of lower sterile floret ovate; 4-5.5 mm long; coriaceous; obtuse. Lemma of upper sterile floret 1 length of lower sterile floret. Fertile lemma ovate; 4-5.5 mm long; coriaceous; without keel. Lemma apex acute; awned; 1 -awned. Principal lemma awn 1.5-2 mm long overall. Palea ovate; 1 length of lemma; coriaceous; without keels. Palea apex obtuse.
Morphology Reproductive morphology Flowers
Lodicules 3; ciliate. Anthers 3. Stigmas 2.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
South America: northern South America.
Reference
Bambuseae. Fl Guiana 1995.
[GB]

Bernal, R., Gradstein, S.R. & Celis, M. (eds.). 2015. Catálogo de plantas y líquenes de Colombia. Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá. http://catalogoplantasdecolombia.unal.edu.co

Distribution
Nativa en Colombia; Andes.
Morphology General Habit
Hierba
Conservation
No Evaluada
[CPLC]

Sources

  • Catálogo de Plantas y Líquenes de Colombia

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

  • 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

  • Useful Plants and Fungi of Colombia

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