Dendrocalamus sinicus L.C.Chia & J.L.Sun

First published in Bamboo Res. 1982(1): 10 (1982)
This species is accepted
The native range of this species is China (Yunnan) to Laos. It is a bamboo and grows primarily in the subtropical biome.

Descriptions

Morphology General Habit
Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; nodding at the tip; 2000-3000 cm long; 200-300 mm diam.; woody; with aerial roots from the nodes. Culm-internodes terete; thick-walled; 17-22 cm long; distally mealy. Lateral branches dendroid; arising from upper culm. Branch complement many; with subequal branches. Culm-sheaths persistent; coriaceous; hispid; hairy above; with appressed hairs; with dark brown hairs; without auricles; glabrous on shoulders. Culm-sheath ligule 6 mm high; entire, or dentate. Culm-sheath blade triangular; as wide as sheath at base; erect; pubescent; acuminate. Leaf-sheaths glabrous on surface, or puberulous. Leaf-sheath oral hairs lacking. Leaf-sheath auricles absent. Ligule an eciliate membrane; 1.5-2 mm long; erose. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades oblong; 20-40 cm long; 40-65 mm wide. Leaf-blade venation with 20-26 secondary veins; with distinct cross veins. Leaf-blade surface glabrous, or puberulous; hairy on both sides. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Synflorescence bractiferous; clustered at the nodes; in stellate clusters; 2-4 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 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; compressed slightly; 30-35 mm long; 6.5-7.5 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes suppressed between florets.
Fertile
Spikelets comprising 5 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; compressed slightly; 30-35 mm long; 6.5-7.5 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes suppressed between florets.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes two; persistent; similar; shorter than spikelet. Lower glume ovate; 12-15 mm long; chartaceous; without keels. Lower glume lateral veins with cross-veins. Lower glume surface puberulous. Lower glume margins ciliolate. Lower glume apex acute; mucronate. Upper glume ovate; 12-15 mm long; chartaceous; without keels. Upper glume lateral veins with cross-veins. Upper glume surface puberulous. Upper glume margins ciliolate. Upper glume apex acute; mucronate.
Morphology Reproductive morphology Flowers Florets
Fertile florets increasing in size upwards. Fertile lemma ovate; 17-25 mm long; chartaceous; without keel. Lemma apex acuminate. Palea chartaceous; 2-keeled but the uppermost without keels. Palea keels ciliolate. Palea surface pubescent; hairy on back. Palea apex dentate; 2 -fid.
Morphology Reproductive morphology Flowers
Lodicules absent. Anthers 6; 8-12 mm long; anther tip apiculate. Filaments free, or united in a tube; 1.5-3 mm long. Stigmas 1. Ovary pubescent on apex.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
Asia-temperate: China.
Reference
Bambuseae. Chia & Sun 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