Chusquea deflexa L.G.Clark

First published in Iowa State J. Res. 61: 102 (1986)
This species is accepted
The native range of this species is El Salvador to Honduras. It is a bamboo and grows primarily in the wet tropical biome.

Descriptions

Morphology General Habit
Perennial. Culms erect; 100-200 cm long; 4-8 mm diam.; woody; without nodal roots. Culm-internodes terete; solid; 6-12 cm long; yellow; smooth; distally pruinose. Culm-nodes swollen; with distinct supra-nodal ridge. Lateral branches dendroid; intravaginal; erect. Bud complement 7-15. Branch complement many; in a clump; with 1 branch dominant; thinner than stem. Culm-sheaths persistent. Culm-sheath blade triangular; deciduous. Leaves 4-7 per branch. Leaf-sheaths keeled; glabrous on surface; outer margin glabrous. Ligule an eciliate membrane; 1-2.5 mm long; pubescent on abaxial surface; obtuse, or acute. Collar with external ligule. Leaf-blade base broadly rounded; with a brief petiole-like connection to sheath; petiole 0.2-0.3 cm long. Leaf-blades erect; lanceolate; 7.5-13.5 cm long; 10-22 mm wide; stiff. Leaf-blade venation with distinct cross veins. Leaf-blade surface glabrous. Leaf-blade margins cartilaginous; smooth, or scaberulous. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle; embraced at base by subtending leaf. Panicle contracted; oblong; secund; 7-11 cm long. Primary panicle branches ascending; 1-1.5 cm long. Panicle axis puberulous. Panicle branches angular; puberulous. Spikelets spreading; solitary. Fertile spikelets pedicelled. Pedicels angular; 1-3 mm long; puberulous.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 5.5-6.4 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 lanceolate; laterally compressed; 5.5-6.4 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 0.6-1 mm long; 0.1-0.2 length of upper glume; membranous; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 0.9-1.5 mm long; 0.2-0.25 length of adjacent fertile lemma; without keels; 0-1 -veined. Upper glume primary vein absent, or distinct. Upper glume lateral veins absent. Upper glume apex acute.
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; 4.2 mm long; 0.66-0.75 length of spikelet; chartaceous; 3-5 -veined; scabrous; ciliate on margins; fringed above; acuminate. Lemma of upper sterile floret ovate; 4.4-4.8 mm long; chartaceous; scabrous; ciliate on margins; fringed above; acuminate. Fertile lemma ovate; 5.6 mm long; coriaceous; without keel; 9 -veined. Lemma surface scabrous; rough above; inner surface pubescent. Lemma margins ciliate; hairy above. Lemma apex acuminate. Palea 5.7 mm long; 4 -veined. Palea keels contiguous above a sulcus. Palea surface puberulous; hairy on back.
Morphology Reproductive morphology Flowers
Lodicules 3; 1.2 mm long; membranous; ciliate. Anthers 3; 2.7 mm long. Stigmas 2.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; apex unappendaged.
Distribution
South America: Mesoamericana.
Reference
Bambuseae. Clark 1995.
[GB]

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/
  • 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