Poaceae
Bambusa

Bambusa cacharensis R.B.Majumdar

First published in Bull. Bot. Surv. India 25: 237 (1983 publ. 1985)
This species is accepted
The native range of this species is India (NE. West Bengal) to Bangladesh. 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: low confidence
[AERP]

Morphology General Habit
Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; 2000-2100 cm long; 50-100 mm diam.; woody; without nodal roots. Culm-internodes terete; thin-walled. Lateral branches dendroid. Branch complement many. Culm-sheaths 12-15 cm long; 0.5 times as long as wide; yellow; hispid; with tawny hairs; auriculate; ciliate on shoulders. Culm-sheath blade ovate; erect. Leaves cauline. Ligule an eciliate membrane. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate; 16-20 cm long; 15-25 mm wide. Leaf-blade margins scabrous. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Synflorescence bractiferous; clustered at the nodes; in untidy tufts; with glumaceous subtending bracts; with axillary buds at base of spikelet; prophyllate below lateral spikelets; leafless between clusters.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 3-6 fertile florets; with diminished florets at the apex. Spikelets linear; subterete; 30-35 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite.
Fertile
Spikelets comprising 3-6 fertile florets; with diminished florets at the apex. Spikelets linear; subterete; 30-35 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes two. Lower glume ovate; 5 mm long. Upper glume ovate; 8 mm long.
Morphology Reproductive morphology Flowers Florets
Fertile lemma ovate; 10-14 mm long; without keel. Palea keels scabrous. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 3; membranous; ciliate. Anthers 6.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
Asia-tropical: India.
Reference
Bambuseae. Majumdar 2002.
[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

  • 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