Poaceae
Bambusa

Bambusa gibboides W.T.Lin

First published in Acta Phytotax. Sin. 16(1): 70 (1978)
This species is accepted
The native range of this species is China (Guangdong). It is a bamboo and grows primarily in the wet tropical 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; drooping at the tip; 1000-1200 cm long; 50-70 mm diam.; woody; without nodal roots. Culm-internodes terete; thick-walled; 40-47 cm long; distally pruinose and hispid. Lateral branches dendroid; arising from lower culm. Buds or branches present on lower quarter of culm. Branch complement several, or many; in a clump; with 1 branch dominant; thinner than stem. Culm-sheaths deciduous; coriaceous; pubescent; hairy below; with appressed hairs; with dark brown hairs; truncate at apex; auriculate; with unequal auricles; with 2.5-6 mm high auricles; setose on shoulders; shoulders with curved hairs. Culm-sheath ligule 2-3 mm high; dentate and ciliolate. Culm-sheath blade narrowly ovate, or triangular; narrower than sheath; erect. Ligule an eciliate membrane. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades linear, or lanceolate; 10-20 cm long; 13-20 mm wide. Leaf-blade venation with 12-18 secondary veins. Leaf-blade surface pubescent; densely hairy; hairy abaxially.
Morphology Reproductive morphology Inflorescences
Synflorescence bractiferous; clustered at the nodes; in untidy tufts; with spathaceous subtending bracts; with axillary buds at base of spikelet; prophyllate below lateral spikelets; leafless between clusters.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 5-7 fertile florets; with diminished florets at the apex. Spikelets linear, or lanceolate; laterally compressed; 30-40 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; flattened; 3-4 mm long; pilose.
Fertile
Spikelets comprising 5-7 fertile florets; with diminished florets at the apex. Spikelets linear, or lanceolate; laterally compressed; 30-40 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; flattened; 3-4 mm long; pilose.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes several; comprising 2 gemmiferous bracts; 1 empty glumes; persistent; similar; shorter than spikelet; similar to fertile lemma in texture. Lower glume ovate; 6-8 mm long. Lower glume apex acute; mucronate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma elliptic, or ovate; 10-14 mm long; without keel. Lemma apex acute; mucronate. Palea 11-15 mm long; 14-17 -veined. Palea keels pubescent; adorned above. Palea apex obtuse. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 3; membranous; ciliate. Anthers 6. Stigmas 3. Ovary pubescent on apex.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
Asia-temperate: China.
Reference
Bambuseae. Fl China 2005.
[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

  • 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