Chusquea spencei Ernst

First published in J. Bot. 10: 262 (1872)
This species is accepted
The native range of this species is Colombia to N. Venezuela. It is a bamboo and grows primarily in the wet tropical biome.

Descriptions

Bernal, R., Gradstein, S.R. & Celis, M. (eds.). 2015. Catálogo de plantas y líquenes de Colombia. Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá. http://catalogoplantasdecolombia.unal.edu.co

Distribution
Nativa en Colombia; Alt. 2700 - 3350 m.; Andes.
Morphology General Habit
Arbolito
Conservation
No Evaluada
[CPLC]

Distribution
Biogeografic region: Andean. Elevation range: 2700–3350 m a.s.l. Native to Colombia. Colombian departments: Bogotá DC, Boyacá, Cundinamarca, La Guajira, Norte de Santander, Santander.
Habit
Small tree.
[UPFC]

Morphology General Habit
Perennial. Culms erect; pendulous at the tip; 200-600 cm long; 5-40 mm diam.; woody; without nodal roots. Culm-internodes terete; solid; 7-11 cm long; yellow, or brown, or purple; smooth; distally pruinose. Lateral branches dendroid; intravaginal. Bud complement 30-38. Branch complement many; in a horizontal line; thinner than stem. Culm-sheaths persistent; 6-22 cm long; hispid. Culm-sheath ligule 0.5-2 mm high; dentate. Culm-sheath blade triangular; indistinctly demarcated from sheath; erect; 3-6 cm long; pubescent. Leaves 3-5 per branch. Ligule an eciliate membrane; 0.5-1 mm long; glabrous on abaxial surface; truncate. Collar without external ligule. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.05-0.2 cm long. Leaf-blades lanceolate; 5-14 cm long; 2-6 mm wide; stiff, or firm. Leaf-blade venation without cross veins. Leaf-blade surface smooth; glabrous.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle; embraced at base by subtending leaf. Panicle spiciform; linear; secund; 2.5-12 cm long. Primary panicle branches appressed; 1-1.5 cm long. Panicle axis angular; pubescent. Panicle branches angular; pubescent. Spikelets solitary. Fertile spikelets pedicelled. Pedicels angular; 2 mm long; pubescent.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 4.6-7.3 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; 4.6-7.3 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; 0.7-2.1 mm long; membranous; without keels; 0-1 -veined. Lower glume lateral veins absent, or obscure. Lower glume surface scabrous. Lower glume margins ciliate. Lower glume apex obtuse. Upper glume ovate; 1.1-2.7 mm long; 0.2-0.5 length of adjacent fertile lemma; membranous; without keels; 1-3 -veined. Upper glume lateral veins absent, or obscure. Upper glume surface pubescent; hairy above. 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; 2.3-4.6 mm long; 0.5-0.75 length of fertile lemma; chartaceous; 1-5 -veined; without lateral veins, or distinctly veined; scabrous; rough on midvein; acute. Lemma of upper sterile floret ovate; 3.5-6.1 mm long; chartaceous; scabrous (on midvein); acute. Fertile lemma ovate; 4-5.9 mm long; coriaceous; without keel; 5-9 -veined. Lemma midvein scabrous (above). Lemma apex apiculate. Palea 3.8-5.9 mm long; 4-6 -veined. Palea surface smooth, or scaberulous.
Morphology Reproductive morphology Flowers
Lodicules 3; membranous; ciliate. Anthers 2; 2.5-3.5 mm long. Stigmas 2.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; 3.7 mm long; apex unappendaged.
Distribution
South America: northern South America and western South America.
Reference
Bambuseae. Clark 1995.
[GB]

Sources

  • Catálogo de Plantas y Líquenes de Colombia

    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • 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
  • Useful Plants and Fungi of Colombia

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