Dendrocalamus jianshuiensis Hsueh & D.Z.Li

First published in J. Bamboo Res. 7(4): 14 (1988)
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; pendulous at the tip; 1700-1800 cm long; 100-120 mm diam.; woody; without nodal roots, or rooting from lower nodes. Culm-internodes terete; thin-walled; 25-37 cm long. Lateral branches dendroid. Branch complement many. Culm-sheaths deciduous; 1 length of internode; coriaceous; truncate at apex; auriculate; with 1 mm high auricles; with 5-20 mm wide auricles. Culm-sheath ligule 1-4 mm high; dentate. Culm-sheath blade triangular; reflexed; 10-20 cm long; 35-75 mm wide; pubescent; acuminate. Leaves 9 per branch. Leaf-sheaths glabrous on surface. Leaf-sheath oral hairs ciliate. Ligule an eciliate membrane; 2 mm long. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades oblong; 20-30 cm long; 35-85 mm wide. Leaf-blade venation with 18-26 secondary veins. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Synflorescence bractiferous; clustered at the nodes; in globose clusters; 2.2-7.5 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 6-7 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 10-18 mm long; 5-10 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes suppressed between florets.
Fertile
Spikelets comprising 6-7 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 10-18 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 several; 1-3 empty glumes; persistent; similar; shorter than spikelet. Lower glume ovate; 5-8 mm long; chartaceous; without keels. Lower glume surface puberulous. Lower glume apex acute; mucronate. Upper glume ovate; 5-8 mm long; chartaceous; without keels. Upper glume surface pubescent. Upper glume apex acute; mucronate.
Morphology Reproductive morphology Flowers Florets
Fertile florets increasing in size upwards. Fertile lemma ovate; 7-12 mm long; 5-10 mm wide; chartaceous; without keel. Lemma apex acuminate. Palea 6-9 mm long; chartaceous; 2-keeled but the uppermost without keels. Palea apex dentate; 2 -fid.
Morphology Reproductive morphology Flowers
Lodicules absent. Anthers 6; 4-6 mm long; yellow; anther tip apiculate. Filaments 10-14 mm long. 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
  • 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