Poaceae
Phyllostachys

Phyllostachys heteroclada Oliv.

First published in Hooker's Icon. Pl. 23: t. 2288 (1894)
This species is accepted
The native range of this species is Central & S. China. It is a bamboo and grows primarily in the temperate biome.

Descriptions

Morphology General Habit
Perennial; caespitose. Rhizomes elongated; leptomorph. Culms erect; woody. Culm-internodes semiterete; thin-walled. Culm-nodes glabrous, or pubescent. Lateral branches dendroid. Leaves cauline. Ligule an eciliate membrane.
Morphology Reproductive morphology Inflorescences
Synflorescence bractiferous; fasciculate; dense; with spathaceous subtending bracts; bracts 2-2.6 mm long; without axillary buds at base of spikelet; with ultimate bract subtending a compact bracteolate fascicle of spikelets; prophyllate below lateral spikelets. Fertile spikelets sessile.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 3-6 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 12-18 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1-1.5 mm long; glabrous, or sparsely hairy; hairy at tip.
Fertile
Spikelets comprising 3-6 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 12-18 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1-1.5 mm long; glabrous, or sparsely hairy; hairy at tip.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes two; persistent; shorter than spikelet. Lower glume lanceolate; 4-6 mm long; membranous; 1-keeled; 1-3 -veined. Lower glume primary vein ciliate. Lower glume lateral veins absent, or distinct. Lower glume apex acuminate. Upper glume lanceolate; 7-8 mm long; membranous; 1-keeled; 5-7 -veined. Upper glume surface puberulous; hairy above. Upper glume apex acuminate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma ovate; 10-17 mm long; chartaceous; without keel; 7-11 -veined. Lemma surface pubescent; hairy above. Lemma apex acuminate. Palea 9-13 mm long; chartaceous. Palea keels approximate; ciliolate. Palea surface pubescent; hairy all along, or above. Palea apex dentate; 2 -fid. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 3; obovate; 2-2.5 mm long; veined; ciliate; obtuse. Anthers 3; 4-6 mm long. Stigmas 3. Styles 2 mm long. Ovary umbonate.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
Asia-temperate: China.
Reference
Bambuseae. Keng 1996.
[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: not 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

  • Herbarium Catalogue Specimens

    • 'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    • 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 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