Poaceae
Chusquea

Chusquea maclurei L.G.Clark

First published in Iowa State J. Res. 61: 109 (1986)
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

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: threatened. Confidence: confident
[AERP]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/45944/11026403

Conservation
VU - vulnerable
[IUCN]

Morphology General Habit
Perennial. Culms erect, or arching; 400-800 cm long; 10-25 mm diam.; woody; without nodal roots. Culm-internodes terete; thick-walled, or solid; 17-26 cm long; smooth, or scaberulous; distally pruinose. Lateral branches dendroid; intravaginal. Bud complement 5-11. Branch complement many; in a horizontal line; thinner than stem. Culm-sheaths persistent; 7-24.5 cm long; antrorsely scabrous (at base). Culm-sheath ligule 3-20 mm high; ciliolate. Culm-sheath blade triangular; cordate; indistinctly demarcated from sheath; erect; 7-17.6 cm long; scabrid. Leaves 5-9 per branch. Ligule an eciliate membrane; 10-70 mm long; truncate. Collar with external ligule. Leaf-blade base asymmetrical; with a brief petiole-like connection to sheath; petiole 0.3-0.7 cm long. Leaf-blades lanceolate; 22-40 cm long; 20-50 mm wide; stiff; yellowish green. Leaf-blade venation without cross veins. Leaf-blade surface glabrous.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle contracted; linear; 28-60 cm long. Primary panicle branches appressed; 9-19 cm long. Panicle axis angular; pubescent. Panicle branches angular; glabrous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels angular; 2-5 mm long; glabrous.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; straight, or curved; laterally compressed; 7.1-9.6 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 elliptic; straight, or curved; laterally compressed; 7.1-9.6 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 0.4-0.6 mm long; membranous; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 0.4-0.6 mm long; 0.05 length of adjacent fertile lemma; membranous; without keels; 0 -veined. Upper glume primary vein absent. Upper glume lateral veins absent. Upper glume apex acute.
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; 3.4-4 mm long; 0.4-0.5 length of fertile lemma; chartaceous; 3 -veined; acute. Lemma of upper sterile floret ovate; 3.8-5.7 mm long; chartaceous; acute. Fertile lemma ovate; 6.6-7.7 mm long; coriaceous; without keel; 5 -veined. Lemma apex apiculate. Palea 6.5-8 mm long; 4 -veined.
Morphology Reproductive morphology Flowers
Lodicules 3; membranous; ciliate. Anthers 3; 2.5-3.2 mm long. Stigmas 2.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; apex unappendaged.
Distribution
South America: western South America.
Reference
Bambuseae. Clark 1995.
[GB]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • GrassBase - The Online World Grass Flora

    • Clayton, W.D., Vorontsova, M.S., Harman, K.T. and Williamson, H. (2006 onwards). 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 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 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 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0