Dendrocalamus tomentosus Hsueh & D.Z.Li

First published in J. Bamboo Res. 8(1): 34 (1989)
This species is accepted
The native range of this species is China (Yunnan). It is a bamboo and grows primarily in the subtropical biome.

Descriptions

Morphology General Habit
Perennial; caespitose. Rhizomes short; pachymorph. Culms erect, or leaning; pendulous at the tip; 1500-2000 cm long; 90-120 mm diam.; woody; with aerial roots from the nodes. Culm-internodes terete; 29-55 cm long; distally pubescent. Lateral branches dendroid. Branch complement many. Culm-sheaths deciduous; coriaceous; pubescent; without auricles. Culm-sheath ligule 5-7 mm high. Culm-sheath blade ovate; spreading, or reflexed; acuminate. Leaves 5-8 per branch. Leaf-sheaths glabrous on surface. Leaf-sheath auricles absent. Ligule an eciliate membrane; 1 mm long. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.3 cm long. Leaf-blades lanceolate; 25-34 cm long; 25-42 mm wide. Leaf-blade venation with 16-22 secondary veins. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Synflorescence bractiferous; clustered at the nodes; in globose clusters; 0.7-1.1 cm long; 1.2 cm between clusters; pubescent on internodes; 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 4-5 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; 5.5 mm long; 4.5 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes suppressed between florets.
Fertile
Spikelets comprising 4-5 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; 5.5 mm long; 4.5 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes suppressed between florets.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes one the lower absent or obscure, or two; persistent; similar; shorter than spikelet. Lower glume ovate; chartaceous; without keels. Lower glume apex acute. Upper glume ovate; chartaceous; without keels. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile florets increasing in size upwards. Fertile lemma ovate; 4-5 mm long; 4-6 mm wide; chartaceous; without keel. Lemma surface pilose. Lemma apex acuminate. Palea 4 mm long; chartaceous; 2-keeled but the uppermost without keels. Palea keels ciliolate.
Morphology Reproductive morphology Flowers
Lodicules absent. Anthers 6; 2.5-3 mm long; yellow; anther tip apiculate. Stigmas 1.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
Asia-temperate: China.
Reference
Bambuseae. Hsueh & Li 2002.
[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: 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
  • 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