Bambusa spinosa Roxb.

First published in Hort. Bengal.: 25 (1814)
This species is accepted
The native range of this species is Jawa to Maluku. It is a bamboo and grows primarily in the wet tropical biome.

Descriptions

Morphology General Habit
Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; 50-100 mm diam.; woody; with root thorns from the nodes. Culm-internodes terete; thin-walled; distally glabrous. Lateral branches dendroid; spreading. Buds or branches present on lower quarter of culm. Culm-sheaths 15-30 cm long; hispid; with dark brown hairs; auriculate; ciliate on shoulders. Culm-sheath ligule 5 mm high; ciliate. Culm-sheath blade ovate; narrower than sheath; reflexed; pubescent; acute. Leaf-sheath oral hairs lacking, or ciliate. Leaf-sheath auricles falcate. Ligule an eciliate membrane. Collar with external ligule. Leaf-blade base cuneate, or truncate; with a brief petiole-like connection to sheath. Leaf-blades lanceolate; 10-20 cm long; 10-20 mm wide.
Morphology Reproductive morphology Inflorescences
Synflorescence bractiferous; clustered at the nodes; in untidy tufts; with glumaceous subtending bracts; with axillary buds at base of spikelet; prophyllate below lateral spikelets.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 5-12 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 30-45 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; zig-zag; 4 mm long; eventually visible between lemmas; pubescent.
Fertile
Spikelets comprising 5-12 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 30-45 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; zig-zag; 4 mm long; eventually visible between lemmas; pubescent.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes several.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; 6-8 mm long; without keel. Lemma apex acute. Palea 1 length of lemma. Palea keels ciliate. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 3. Anthers 6; 4-5 mm long. Stigmas 3. Ovary umbonate; pubescent on apex.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
Asia-temperate: China and eastern Asia. Asia-tropical: Indo-China and Malesia. Pacific: northwestern.
Reference
Bambuseae. Holttum 1995.
[GB]

Sources

  • 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 2022. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 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 2022. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0