Chusquea baculifera Silveira

First published in Arq. Mus. Nac. Rio de Janeiro 22: 99 (1919)
This species is accepted
The native range of this species is SE. Brazil. It is a bamboo and grows primarily in the wet tropical biome.

Descriptions

Morphology General Habit
Perennial. Culms 100-200 cm long; 10 mm diam.; woody; without nodal roots. Culm-internodes terete; solid; 4-11.6 cm long; distally pruinose. Lateral branches dendroid; intravaginal. Bud complement 7-19. Branch complement several, or many; in a horizontal line; thinner than stem. Culm-sheaths persistent; 5-5.7 cm long. Culm-sheath ligule 1-2 mm high; dentate. Culm-sheath blade triangular; demarcated but persistent; erect; 2.3-3.9 cm long. Leaves 10-11 per branch. Ligule an eciliate membrane; 0.2-0.5 mm long; pubescent on abaxial surface; truncate. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.03 cm long. Leaf-blades lanceolate; 2.6-5.6 cm long; 4-5 mm wide; coriaceous; stiff. Leaf-blade venation without cross veins. Leaf-blade surface glabrous, or pilose.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle; embraced at base by subtending leaf. Panicle spiciform; linear; 2-5 cm long. Primary panicle branches appressed; 0.5-1 cm long. Panicle axis angular; scabrous. Panicle branches angular; scabrous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels angular; 1-3 mm long; scabrous.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 6.2-8.7 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 elliptic; laterally compressed; 6.2-8.7 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; 0.2-0.4 mm long; membranous; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 0.2-0.4 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; 4.1-5.1 mm long; 0.66 length of fertile lemma; chartaceous; 1-3 -veined; without lateral veins, or distinctly veined; puberulous; attenuate. Lemma of upper sterile floret ovate; 4-5.5 mm long; chartaceous; pubescent; attenuate, or setaceously attenuate. Fertile lemma ovate; 6-8.3 mm long; coriaceous; without keel; 7 -veined. Lemma apex attenuate, or setaceously attenuate. Palea 5.8-8 mm long; 4 -veined.
Morphology Reproductive morphology Flowers
Lodicules 3; membranous; ciliate. Anthers 3. Stigmas 2.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; apex unappendaged.
Distribution
South America: Brazil.
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