Chusquea cylindrica L.G.Clark

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

Descriptions

Morphology General Habit
Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; robust; 150-200 cm long; woody. Culm-internodes terete; thin-walled. Lateral branches lacking. Leaf-sheaths longer than adjacent culm internode. Ligule a ciliate membrane. Leaf-blade base with a false petiole. Leaf-blades lanceolate; 50-150 cm long; 30-80 mm wide; coriaceous. Leaf-blade margins scabrous. Leaf-blade apex attenuate.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle contracted, or spiciform; lanceolate; 30-80 cm long; contracted about primary branches. Primary panicle branches appressed; bearing spikelets almost to the base. Panicle branches stiff. Spikelets solitary. Fertile spikelets sessile, or pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 6 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; 6 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 lanceolate; 2 mm long; 1 length of upper glume; coriaceous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume lanceolate; 2 mm long; 0.3-0.4 length of adjacent fertile lemma; coriaceous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex acuminate.
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; 3 mm long; 0.5 length of fertile lemma; coriaceous; ciliolate on margins; rostrate. Lemma of upper sterile floret oblong; 4 mm long; 0.66 length of lower sterile floret; coriaceous; ciliolate on margins; acuminate; mucronate. Fertile lemma ovate; 6 mm long; coriaceous; without keel; 5 -veined. Lemma apex acuminate; mucronate. Palea ovate; 1 length of lemma; coriaceous; without keels. Palea apex acute; pubescent.
Morphology Reproductive morphology Flowers
Lodicules 3. Anthers 3. Stigmas 2.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
South America: Caribbean.
Reference
Bambuseae. WDC 1997.
[GB]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/115965995/115968271

Conservation
CR - critically endangered
[IUCN]

Sources

  • GrassBase - The Online World Grass Flora

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

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/
  • IUCN Categories

    • IUCN Red List of Threatened Species
    • 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