Bambusa affinis Munro

First published in Trans. Linn. Soc. London 26: 93 (1868)
This species is accepted
The native range of this species is Indo-China. It is a bamboo and grows primarily in the wet tropical biome.

Descriptions

Morphology General Habit
Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; 500-600 cm long; 25-35 mm diam.; woody; without nodal roots. Culm-internodes terete; 30-60 cm long; light green, or light green and white; concolorous, or striped; striate; distally pubescent. Culm-nodes pubescent. Lateral branches dendroid. Culm-sheaths 10-15 cm long; 1 times as long as wide; yellow; glabrous, or pubescent; hairy throughout; with tawny hairs; convex at apex; without auricles. Culm-sheath blade lanceolate; reflexed; 2.5-5 cm long; 7-12 mm wide; pubescent. Leaves cauline. Leaf-sheaths striately veined; pubescent; hairs tawny. Leaf-sheath oral hairs lacking. Leaf-sheath auricles absent. Ligule an eciliate membrane. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.5 cm long. Leaf-blades lanceolate; 15-25 cm long; 25-35 mm wide; glandular. Leaf-blade midrib conspicuous. Leaf-blade venation with 12-16 secondary veins. Leaf-blade surface scabrous; rough abaxially; glabrous. Leaf-blade margins scabrous. Leaf-blade apex acuminate; antrorsely scabrous.
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; leafy between clusters.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 6-10 fertile florets; with diminished florets at the apex. Spikelets lanceolate; subterete; 25 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; pilose; hairy at tip.
Fertile
Spikelets comprising 6-10 fertile florets; with diminished florets at the apex. Spikelets lanceolate; subterete; 25 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; pilose; hairy at tip.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes several; 2 empty glumes; persistent; shorter than spikelet.
Morphology Reproductive morphology Flowers Florets
Fertile lemma ovate; 6-7 mm long; without keel; 20 -veined. Lemma apex acuminate. Palea 17 -veined. Palea keels ciliolate. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 3; membranous; veined; ciliate. Anthers 6. Stigmas 3. Ovary umbonate; with a few apical hairs.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
Asia-tropical: Indo-China.
Reference
Bambuseae. Gamble 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