Chusquea leonardiorum L.G.Clark

First published in Brittonia 48: 256 (1996)
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

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/45942/11026328

Conservation
NT - near threatened
[IUCN]

Morphology General Habit
Perennial. Culms arching, or scandent; 60-500 cm long; 2-25 mm diam.; woody. Culm-internodes semiterete; 4-14 cm long; distally glabrous, or hirsute. Culm-nodes without obvious supra-nodal ridge. Lateral branches dendroid; extravaginal. Bud complement 19-33. Branch complement many; in a clump; with subequal branches; thinner than stem. Culm-sheaths persistent; 11-24.5 cm long; retrorsely scabrous; pilose; hairy below. Culm-sheath ligule 0.5-2 mm high. Culm-sheath blade triangular; indistinctly demarcated from sheath; erect; 0.7-5.7 cm long; pubescent. Leaves 3-4 per branch. Leaf-sheaths striately veined; pubescent; outer margin glabrous, or hairy. Leaf-sheath auricles erect; 1-7 mm long. Ligule an eciliate membrane; 1-3 mm long. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.1-0.2 cm long. Leaf-blades linear; 7.5-19 cm long; 2-3 mm wide; stiff; glaucous. Leaf-blade venation without cross veins. Leaf-blade surface scaberulous; rough abaxially. Leaf-blade margins scaberulous. Leaf-blade apex attenuate.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle; subtended by an unspecialized leaf-sheath and bracts; embraced at base by subtending leaf. Panicle open; linear; 6-10.5 cm long. Primary panicle branches 1.5-3 cm long. Panicle axis angular; glabrous. Panicle branches angular; glabrous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 1-4 mm long.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 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 oblong; laterally compressed; 5-7 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes both absent or obscure, or two; persistent; shorter than spikelet; thinner than fertile lemma. Lower glume oblate; 0.1-0.2 mm long; membranous; without keels. Lower glume apex obtuse. Upper glume oblate; 0.1-0.2 mm long; 0.02 length of adjacent fertile lemma; membranous; without keels; 0 -veined. Upper glume primary vein absent. Upper glume lateral veins absent. Upper glume apex obtuse.
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; 2.4-4.2 mm long; 0.5-0.66 length of fertile lemma; chartaceous; 3-5 -veined; acute. Lemma of upper sterile floret ovate; 2.7-4.1 mm long; chartaceous; acute; mucronate. Fertile lemma ovate; 4.5-6 mm long; coriaceous; without keel; 7 -veined. Lemma surface pubescent; hairy above; hairy between veins. Lemma margins scaberulous. Lemma apex acute; mucronate. Palea 4-5.7 mm long; 4 -veined. Palea surface scabrous. Palea apex with excurrent keel veins.
Morphology Reproductive morphology Flowers
Lodicules 3; 0.6-1 mm long; membranous; ciliate. Anthers 3; 1.5-3 mm long. Stigmas 2.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; apex unappendaged.
Distribution
South America: western South America.
Reference
Bambuseae. Clark 2001.
[GB]

Sources

  • GrassBase - The Online World Grass Flora

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