Dendrocalamus sikkimensis Gamble ex Oliv.

First published in Hooker's Icon. Pl. 18: t. 1770 (1888)
This species is accepted
The native range of this species is E. Himalaya to China (S. Yunnan). It is a bamboo and grows primarily in the wet tropical biome.

Descriptions

Morphology General Habit
Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; 1700-2000 cm long; 120-200 mm diam.; woody. Culm-internodes terete; thick-walled; 30-45 cm long; dark green; antrorsely scabrous. Lateral branches dendroid. Buds or branches absent from lower quarter of culm. Culm-sheaths 30 cm long; 0.9 times as long as wide; pubescent; with dark brown hairs; auriculate; setose on shoulders. Culm-sheath ligule dentate. Culm-sheath blade lanceolate; reflexed; 20-30 cm long; 50-70 mm wide. Leaf-sheaths smooth. Leaf-sheath oral hairs setose. Leaf-sheath auricles falcate. Ligule an eciliate membrane, or a ciliolate membrane. Leaf-blade base asymmetrical; with a brief petiole-like connection to sheath. Leaf-blades lanceolate, or oblong; 15-25 cm long; 25-50 mm wide. Leaf-blade midrib conspicuous. Leaf-blade venation indistinct; with 20 secondary veins. Leaf-blade surface scabrous; rough abaxially; pilose; hairy abaxially. Leaf-blade margins scabrous. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Synflorescence bractiferous; clustered at the nodes; in globose clusters; 4 cm long; dense; 5 cm between clusters; with glumaceous subtending bracts; with axillary buds at base of spikelet; prophyllate below lateral spikelets; leafless between clusters. Fertile spikelets sessile.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2-3 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 12-20 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes suppressed between florets.
Fertile
Spikelets comprising 2-3 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 12-20 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes suppressed between florets.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes several; 3-4 empty glumes; persistent; similar; shorter than spikelet. Lower glume ovate; chartaceous; 1-keeled. Lower glume primary vein ciliate. Lower glume apex acute. Upper glume ovate; chartaceous; 1-keeled. Upper glume primary vein ciliate. Upper glume apex acuminate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma ovate; 8-10 mm long; chartaceous; without keel. Lemma margins ciliate. Lemma apex acute; mucronate. Palea chartaceous; 2-keeled but the uppermost without keels. Palea keels ciliate. Apical sterile florets 1 in number; barren.
Morphology Reproductive morphology Flowers
Lodicules absent. Anthers 6. Filaments united in a tube. Stigmas 1; pubescent. Ovary umbonate; pubescent all over.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; obovoid.
Distribution
Asia-temperate: China. Asia-tropical: India.
Reference
Bambuseae. Gamble 1996.
[GB]

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: not threatened. Confidence: confident
[AERP]

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
  • 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 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