Borinda grossa (T.P.Yi) Stapleton

First published in Edinburgh J. Bot. 51: 288 (1994)
This species is accepted
The native range of this species is E. Himalaya to Tibet. It is a bamboo and grows primarily in the temperate biome.

Descriptions

Morphology General Habit
Perennial; caespitose; clumped densely. Rhizomes short; pachymorph. Culms erect; drooping at the tip; 500-1000 cm long; 20-45 mm diam.; woody; without nodal roots. Culm-internodes terete; thin-walled; 25-50 cm long; ridged; distally pruinose, or glabrous. Culm-nodes flush with internodes. Lateral branches dendroid. Bud prophyll 1-keeled. Branch complement three; subtended by a bare patch above the node; with subequal branches; thinner than stem. Culm-sheaths persistent; 26 cm long; 2 times as long as wide; hispid; with dark brown hairs; without auricles; setose on shoulders; shoulders with straight hairs; shoulders with 3-8 mm long hairs. Culm-sheath ligule 1-2 mm high; ciliolate. Culm-sheath blade lanceolate; deciduous; erect; 3.5-7 cm long; 20 mm wide; hispid. Leaf-sheaths glabrous on surface, or pubescent. Leaf-sheath oral hairs setose; 3-5 mm long. Ligule an eciliate membrane; 15-25 mm long; truncate. Collar pilose. Leaf-blade base with a brief petiole-like connection to sheath; petiole pubescent. Leaf-blades lanceolate; 4.5-18 cm long; 5-20 mm wide. Leaf-blade venation with distinct cross veins. Leaf-blade surface glabrous, or pilose; sparsely hairy; hairy adaxially.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle branches bearded in axils; with insignificant pulvini. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 20-30 mm long.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 5-10 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 30-55 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 4-6 mm long; pubescent and pilose; hairy all along but hairs longer above.
Fertile
Spikelets comprising 5-10 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 30-55 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 4-6 mm long; pubescent and pilose; hairy all along but hairs longer above.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 9-15 mm long; chartaceous; without keels. Lower glume apex acute; awned. Upper glume elliptic; 13-17 mm long; 0.8-0.9 length of adjacent fertile lemma; chartaceous; without keels. Upper glume apex acute; awned.
Morphology Reproductive morphology Flowers Florets
Fertile lemma 15-20 mm long; chartaceous; without keel. Lemma surface scabrous; rough above; puberulous. Lemma margins ciliolate. Palea 10-12 mm long; 2 -veined. Palea keels ciliate; adorned above; with 0.5 of their length adorned; with hairs 3 mm long. Palea apex entire, or dentate; 2 -fid; ciliate. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 3; ciliate. Anthers 3; 9 mm long; yellow; anther tip smooth, or penicillate. Stigmas 2-3.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; apex unappendaged.
Distribution
Asia-temperate: China. Asia-tropical: India.
Reference
Bambuseae. Stapleton 1995.
[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: low confidence
[AERP]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/44393275/44493247

Conservation
LC - least concern
[IUCN]

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/
  • IUCN Categories

    • IUCN Red List of Threatened Species
    • 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