Poaceae
Saccharum

Saccharum longesetosum (Andersson) V.Naray. ex Bor

First published in Fl. Assam 5(App. 1): 461 (1940)
This species is accepted
The native range of this species is Himalaya to S. China. It is a perennial and grows primarily in the subtropical biome.

Descriptions

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]

Morphology General Habit
Perennial; caespitose. Rhizomes elongated. Culms erect; robust; 200-250 cm long. Culm-internodes solid. Leaf-sheaths pilose; with tubercle-based hairs. Ligule a ciliolate membrane. Leaf-blades 30-100 cm long; 7-15 mm wide. Leaf-blade surface smooth; glabrous, or puberulous. Leaf-blade margins scabrous. Leaf-blade apex attenuate.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle with branches tipped by a raceme. Peduncle glabrous. Panicle open; elliptic; dense; 15-45 cm long. Rhachis fragile at the nodes; subterete; villous on surface. Rhachis hairs tawny; 3-8 mm long. Rhachis internodes linear. Spikelets in pairs. Fertile spikelets sessile and pedicelled; 2 in the cluster; heteromorphic (pedicelled spikelet villous); subequal. Pedicels linear; villous; with tawny hairs; with 3-8 mm long hairs.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate, or oblong; dorsally compressed; 4.5-5 mm long; falling entire; deciduous from the base, or with accessory branch structures. Spikelet callus bearded; base truncate. Spikelet callus hairs tawny; 8 mm long; 2 length of spikelet.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate, or oblong; dorsally compressed; 4.5-5 mm long; falling entire; deciduous from the base, or with accessory branch structures. Spikelet callus bearded; base truncate. Spikelet callus hairs tawny; 8 mm long; 2 length of spikelet.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; firmer than fertile lemma. Lower glume lanceolate; 1 length of spikelet; chartaceous; much thinner above; 2-keeled; 2-6 -veined. Lower glume surface flat; glabrous (sessile), or villous (pedicelled); hairy below. Lower glume apex emarginate, or truncate. Upper glume lanceolate; 1 length of spikelet; chartaceous; much thinner above; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume margins ciliate. Upper glume apex acuminate.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; without significant palea. Lemma of lower sterile floret oblong; hyaline; ciliolate on margins; acute. Fertile lemma linear; 3.5 mm long; hyaline. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; 10-20 mm long overall. Palea absent or minute.
Morphology Reproductive morphology Flowers
Lodicules 2; cuneate; ciliate. Anthers 3.
Distribution
Asia-temperate: China. Asia-tropical: India and Indo-China.
Reference
Andropogoneae. Fl Assam 1993.
[GB]

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