Bambusa maculata Widjaja

First published in Reinwardtia 11: 63 (1997)
This species is accepted
The native range of this species is Lesser Sunda Islands 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; pendulous at the tip; 1500 cm long; 40-70 mm diam.; woody; without nodal roots. Culm-internodes terete; thick-walled; 30-35 cm long; white and brown; mottled; distally glabrous. Lateral branches dendroid; arising from lower culm. Bud complement 1. Branch complement several; in a clump; with 1 branch dominant; thinner than stem. Culm-sheaths deciduous; 15-16 cm long; 1 times as long as wide; convex at apex; auriculate; with 4-4.5 mm high auricles; setose on shoulders; shoulders with 14-15 mm long hairs. Culm-sheath ligule 2 mm high; entire. Culm-sheath blade triangular; erect, or spreading; 6.5-8.2 cm long; 35-45 mm wide. Ligule an eciliate membrane; 1 mm long; erose. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades deciduous at the ligule; lanceolate; 22.5-38 cm long; 10-45 mm wide. Leaf-blade surface glabrous. Leaf-blade apex acuminate.
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 10 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 19-28 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; 1-3 mm long; glabrous.
Fertile
Spikelets comprising 10 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 19-28 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; 1-3 mm long; glabrous.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes two; persistent; similar; shorter than spikelet; similar to fertile lemma in texture. Lower glume ovate; 3-4 mm long. Lower glume apex acute. Upper glume ovate; 3-4 mm long. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma ovate; 6-14 mm long; without keel. Lemma surface glabrous. Lemma apex acute. Palea 4-11 mm long. Palea keels ciliolate. Palea apex acute. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 3; 2-3 mm long; membranous; ciliate. Anthers 6; 8 mm long; yellow. Stigmas 3. Ovary glabrous, or with a few apical hairs.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
Asia-tropical: Malesia.
Reference
Bambuseae. Widjaja 2002.
[GB]

Sources

  • 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 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