Dendrocalamus pachystachyus Hsueh & D.Z.Li

First published in J. Bamboo Res. 8(1): 25 (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

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]

Morphology General Habit
Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; erect at the tip, or inclined at the tip; 1000-1200 cm long; 100 mm diam.; woody; with aerial roots from the nodes. Culm-internodes terete; thick-walled; 39-47 cm long. Lateral branches dendroid. Branch complement many. Culm-sheaths deciduous; coriaceous; glabrous; without auricles. Culm-sheath ligule 3 mm high; dentate. Culm-sheath blade ovate; reflexed; 6-12 cm long; acuminate. Leaves 10-15 per branch. Leaf-sheaths pilose. Ligule an eciliate membrane; 3-5 mm long; erose. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades oblong; 20-40 cm long; 60-120 mm wide. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Synflorescence bractiferous; clustered at the nodes; in stellate clusters; 1.2-3 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 5-8 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; 17-28 mm long; 5-10 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes suppressed between florets.
Fertile
Spikelets comprising 5-8 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; 17-28 mm long; 5-10 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes suppressed between florets.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes two, or several; 2-3 empty glumes; persistent; similar; shorter than spikelet. Lower glume ovate; chartaceous; without keels. Lower glume apex acute; mucronate. Upper glume ovate; chartaceous; without keels. Upper glume apex acute; mucronate.
Morphology Reproductive morphology Flowers Florets
Fertile florets increasing in size upwards. Fertile lemma ovate; 7.5-12.5 mm long; chartaceous; without keel. Lemma apex acuminate; mucronate. Palea 1 length of lemma; chartaceous; 2-keeled but the uppermost without keels. Palea apex dentate; 2 -fid.
Morphology Reproductive morphology Flowers
Lodicules absent. Anthers 6; 6-7 mm long; yellow. Filaments 7-11 mm long. Stigmas 1.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
Asia-temperate: China.
Reference
Bambuseae. Hsueh & Li 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
  • 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