Poaceae
Chusquea

Chusquea annagardneriae L.G.Clark, C.D.Tyrrell, Triplett & A.E.Fisher

First published in J. Bot. Res. Inst. Texas 1: 847 (2007)
This species is accepted
The native range of this species is Ecuador. It is a bamboo and grows primarily in the wet tropical biome.

Descriptions

Morphology General Habit
Perennial. Culms scandent; 250-400 cm long; 5-11 mm diam.; woody. Culm-internodes terete; 20-32 cm long; distally glabrous. Culm-nodes with distinct supra-nodal ridge. Lateral branches dendroid; extravaginal. Bud complement 40-50. Branch complement many; in a clump; with 2 branches dominant and interspersed leafless fibrillar branches; thinner than stem. Culm-sheaths persistent; 22-25 cm long; glabrous; hairy on margins. Culm-sheath ligule 2 mm high; brown; ciliolate. Culm-sheath blade lanceolate; narrower than sheath; erect; 2.2-4 cm long; scabrid. Leaves 3-5 per branch. Leaf-sheaths keeled (above); glabrous on surface, or pilose; outer margin hairy. Leaf-sheath auricles falcate. Ligule an eciliate membrane; 0.5-0.8 mm long; truncate, or obtuse. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.05-0.1 cm long; petiole glabrous. Leaf-blades lanceolate; 2.9-8.5 cm long; 4-13 mm wide. Leaf-blade venation without cross veins. Leaf-blade surface glabrous. Leaf-blade margins smooth, or scaberulous. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; pyramidal; 3-9 cm long. Primary panicle branches 1.5-4.5 cm long. Panicle axis scabrous. Panicle branches pubescent; pubescent in axils. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 1-3 mm long; scabrous.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 5-5.7 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 elliptic; laterally compressed; 5-5.7 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes both absent or obscure.
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; 2-3 mm long; 0.5 length of fertile lemma; chartaceous; 3 -veined; ciliolate on margins; fringed above; acute. Lemma of upper sterile floret ovate; 2.2-3.3 mm long; 1.1 length of lower sterile floret; chartaceous; ciliolate on margins; fringed above; acute. Fertile lemma lanceolate; 4.6-5 mm long; coriaceous; without keel; 5-7 -veined. Lemma surface pubescent; hairy above. Lemma apex acute. Palea 4.6-5.1 mm long; 1 length of lemma; 4-6 -veined. Palea surface pubescent; hairy on back; hairy above.
Morphology Reproductive morphology Flowers
Lodicules 3; 1-1.2 mm long; ciliate. Anthers 3; 2.7 mm long.
Distribution
South America: western South America.
Reference
Bambuseae. Clark et al 2009.
[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