Dendrocalamus menglongensis Hsueh & K.L.Wang ex N.H.Xia, R.S.Lin & Y.B.Guo

First published in Nordic J. Bot. 28: 506 (2010)
This species is accepted
The native range of this species is China (Guangdong). 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; 1000-1200 cm long; 80-100 mm diam.; woody; with aerial roots from the nodes. Culm-internodes terete; thick-walled; 20-35 cm long. Lateral branches dendroid. Branch complement many; with 1 branch dominant. Culm-sheaths persistent; 10 cm long; coriaceous; hispid; hairy throughout; with dark brown hairs; concave at apex, or truncate at apex; without auricles. Culm-sheath ligule 10 mm high; ciliolate. Culm-sheath blade triangular; reflexed; 3 cm long; hispid; acuminate. Leaves 6-10 per branch. Leaf-sheaths pruinose; smooth. Leaf-sheath auricles absent. Ligule an eciliate membrane; 0.5-1 mm long. Leaf-blade base cuneate; with a brief petiole-like connection to sheath. Leaf-blades lanceolate, or oblong; 20-39 cm long; 30-45 mm wide. Leaf-blade surface glabrous, or pubescent; hairy abaxially. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Synflorescence bractiferous; clustered at the nodes; in stellate clusters; dense; with glumaceous subtending bracts; with axillary buds at base of spikelet; prophyllate below lateral spikelets; leafless between branches; 80-120 cm long overall. Fertile spikelets sessile.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 4-5 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 8-11 mm long; 3-5 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 lanceolate; subterete; 8-11 mm long; 3-5 mm wide; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes suppressed between florets.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet. Lower glume ovate; 3-4 mm long; 1 length of upper glume; chartaceous; without keels. Lower glume surface puberulous. Lower glume apex acute. Upper glume ovate; 3-4 mm long; 0.6 length of adjacent fertile lemma; chartaceous; without keels. Upper glume surface puberulous. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile florets increasing in size upwards. Fertile lemma ovate; 5-7 mm long; chartaceous; without keel. Lemma surface puberulous. Lemma apex acute; mucronate. Palea ovate; chartaceous; 2-keeled but the uppermost without keels. Palea keels ciliate. Palea surface puberulous; hairy on back.
Morphology Reproductive morphology Flowers
Lodicules absent, or 1. Anthers 6; 5-7 mm long; yellow; anther tip apiculate. Filaments 3-4 mm long. Stigmas 1; purple; plumose. Styles 2-4 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; ovoid; 2-4 mm long.
Distribution
Asia-temperate: China.
Reference
Bambuseae. Lin & Guo 2011.
[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