Chusquea hatschbachii L.G.Clark & Blong

First published in J. Amer. Bamboo Soc. 22: 29 (2009)
This species is accepted
The native range of this species is Brazil (Santa Catarina). It is a bamboo and grows primarily in the wet tropical biome.

Descriptions

Morphology General Habit
Perennial; caespitose. Culms erect; 100-150 cm long; 4-6 mm diam.; woody. Culm-internodes terete; thick-walled; 5-8 cm long; distally pruinose. Culm-nodes swollen. Lateral branches dendroid; intravaginal; ascending. Branch complement several; in a horizontal line; with 1 branch dominant. Culm-sheaths persistent; 6-9.5 cm long; antrorsely scabrous; glabrous on margins, or hairy on margins; without auricles. Culm-sheath ligule 1-1.5 mm high; ciliolate. Culm-sheath blade triangular; demarcated but persistent; erect; 1.5-4.6 cm long; scabrid; acuminate. Leaves 3-4 per branch. Leaf-sheaths striately veined; glabrous on surface. Ligule an eciliate membrane; 1-2.5 mm long; truncate, or obtuse. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.05-0.15 cm long. Leaf-blades lanceolate; 3.3-6.6 cm long; 4-9 mm wide; coriaceous. Leaf-blade margins scabrous. Leaf-blade apex acute.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle; embraced at base by subtending leaf. Panicle contracted; oblong; 4-6.5 cm long; 1-2 cm wide. Primary panicle branches appressed; 1-2.5 cm long. Panicle axis pubescent. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate, or elliptic; laterally compressed; 2.7-8.7 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 lanceolate, or elliptic; laterally compressed; 2.7-8.7 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 orbicular; 0.2-0.6 mm long; 0.33 length of upper glume; membranous; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume ovate; 0.6-2 mm long; 0.08-0.2 length of adjacent fertile lemma; 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 similar; barren; without significant palea; attached to and deciduous with the fertile. Lemma of lower sterile floret ovate; 3.5-4.5 mm long; 0.5 length of fertile lemma; chartaceous; 3 -veined; acute; awned. Awn of lower sterile floret 1-1.5 mm long. Lemma of upper sterile floret ovate; 4-5 mm long; 1.1 length of lower sterile floret; chartaceous; acute; awned. Awn of upper sterile floret 1-2 mm long. Fertile lemma ovate; 6.5-7.5 mm long; coriaceous; without keel; 7-9 -veined. Lemma apex acute; mucronate, or awned; 1 -awned. Principal lemma awn 0.8-1.2 mm long overall. Palea 1 length of lemma; 4 -veined. Palea apex awned; awns 0.7 mm long.
Morphology Reproductive morphology Flowers
Lodicules 3; 1.5 mm long; membranous; ciliate. Anthers 3; 3-4 mm long.
Distribution
South America: Brazil.
Reference
Bambuseae. Clark & Blong 2011.
[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