Poaceae
Chusquea

Chusquea lorentziana Griseb.

First published in Abh. Königl. Ges. Wiss. Göttingen 19: 249 (1874)
This species is accepted
The native range of this species is Bolivia to NW. Argentina. It is a bamboo and grows primarily in the subtropical biome.

Descriptions

Morphology General Habit
Perennial. Culms arching; 300-600 cm long; 3-15 mm diam.; woody; without nodal roots. Culm-internodes terete. Lateral branches dendroid; infravaginal; ascending, or spreading. Branch complement many. Leaf-sheaths glabrous on surface; outer margin glabrous. Ligule an eciliate membrane; 1-2 mm long. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate; 5-15 cm long; 4-8 mm wide. Leaf-blade surface glabrous. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; oblong; 5-15 cm long. Primary panicle branches ascending. Panicle axis glabrous, or pubescent. Panicle branches glabrous, or pubescent. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 8-9.5 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; 8-9.5 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; 1-2.5 mm long; 1 length of upper glume; membranous; without keels. Lower glume apex acuminate; muticous, or mucronate. Upper glume ovate; 1-2.5 mm long; without keels. Upper glume apex acuminate; muticous, or mucronate.
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; 3.5-5 mm long; chartaceous; acuminate; muticous, or mucronate. Lemma of upper sterile floret ovate; chartaceous. Fertile lemma lanceolate; 7-9 mm long; coriaceous; without keel.
Morphology Reproductive morphology Flowers
Lodicules 3. Anthers 3. Stigmas 2.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; apex unappendaged.
Distribution
South America: western South America and southern South America.
Reference
Bambuseae. Gr Bolivia 1997.
[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