Poaceae
Drepanostachyum

Drepanostachyum membranaceum (T.P.Yi) D.Z.Li

First published in Novon 15: 600 (2005)
This species is accepted
The native range of this species is China (S. Sichuan). It is a bamboo and grows primarily in the subtropical biome.

Descriptions

Morphology General Habit
Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; erect at the tip; 140-200 cm long; 5-10 mm diam.; woody. Culm-internodes terete; thick-walled; 13-15 cm long; estriate; distally glabrous. Culm-nodes swollen. Lateral branches dendroid; ascending. Bud complement 1. Branch complement several, or many; thinner than stem. Culm-sheaths persistent; 15-24 cm long; 9-10 times as long as wide; chartaceous; purple; hispid; with tawny hairs; hairy on margins; without auricles; glabrous on shoulders. Culm-sheath ligule 1-2 mm high; fimbriate. Culm-sheath blade linear; narrower than sheath; erect, or spreading; 0.5-6 cm long; 1-1.5 mm wide; glabrous on surface. Leaves 4-5 per branch. Leaf-sheaths 2.2-3.2 cm long; striately veined; glabrous on surface; outer margin hairy. Leaf-sheath oral hairs lacking. Leaf-sheath auricles absent. Ligule an eciliate membrane; 1-1.5 mm long. Collar with external ligule. Leaf-blade base cuneate; with a brief petiole-like connection to sheath. Leaf-blades linear, or lanceolate; 4-10 cm long; 3-6 mm wide; chartaceous. Leaf-blade venation with 4 secondary veins; with distinct cross veins. Leaf-blade surface glabrous. Leaf-blade margins scabrous. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Flowering specimens unknown.
Distribution
Asia-temperate: China.
Reference
Bambuseae. Yi 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 2025. 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 2025. 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