Poaceae
Isachne

Isachne deccanensis Bor

First published in Kew Bull. 4: 95 (1949)
This species is accepted
The native range of this species is India (Tamil Nadu). It is an annual or 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: threatened. Confidence: confident
[AERP]

Morphology General Habit
Perennial. Rhizomes elongated; woody. Culms 15-35 cm long. Culm-nodes glabrous. Leaves cauline. Leaf-sheaths pubescent; with tubercle-based hairs; outer margin hairy. Ligule a fringe of hairs. Leaf-blades 3-15 cm long; 2-6 mm wide. Leaf-blade surface pubescent; with tubercle-based hairs. Leaf-blade margins cartilaginous; scabrous. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; ovate; 5-10 cm long; 2-4 cm wide. Primary panicle branches 2-4 cm long. Panicle axis with scattered hairs, or puberulous. Panicle branches capillary; flexuous; smooth, or scaberulous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels eglandular, or glandular.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets orbicular; dorsally compressed; obtuse; 1.8-2 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets orbicular; dorsally compressed; obtuse; 1.8-2 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes deciduous; similar; reaching apex of florets; thinner than fertile lemma. Lower glume elliptic; 1 length of spikelet; membranous; much thinner on margins; purple; without keels; 7-9 -veined. Lower glume surface pubescent; hairy at apex. Lower glume apex cuspidate. Upper glume orbicular; 1 length of spikelet; membranous; with hyaline margins; without keels; 11 -veined. Upper glume surface pubescent; hairy at apex. Upper glume apex cuspidate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong, or obovate; 1.5 mm long; coriaceous; pallid; without keel. Lemma surface puberulous. Lemma margins involute. Lemma apex obtuse. Palea coriaceous; 2 -veined.
Morphology Reproductive morphology Flowers
Anthers 3; 1.25 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
Asia-tropical: India.
Reference
Isachneae. Bor 1994.
[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

    • 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 2026. 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 2026. 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