Poaceae
Isachne

Isachne albens Trin.

First published in Sp. Gram. 1: t. 85 (1827)
This species is accepted
The native range of this species is Tropical & Subtropical Old World. It is a perennial and grows primarily in the wet tropical 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]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/177287/7406321

Conservation
LC - least concern
[IUCN]

Morphology General Habit
Perennial. Culms erect; 30-100 cm long. Leaf-sheaths 5.5-10 cm long; smooth; glabrous on surface, or hirsute. Ligule a fringe of hairs. Leaf-blades linear, or lanceolate; 5-30 cm long; 7-25 mm wide; stiff. Leaf-blade surface scaberulous; rough on both sides. Leaf-blade margins cartilaginous; scaberulous. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; ovate; effuse; 8-40 cm long; 4-20 cm wide. Primary panicle branches spreading. Panicle branches capillary. Spikelets solitary. Fertile spikelets pedicelled. Pedicels eglandular.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets orbicular; dorsally compressed; 1.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; 0.5 mm long.
Fertile
Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets orbicular; dorsally compressed; 1.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; 0.5 mm long.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes deciduous; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume orbicular; 1.4 mm long; 1 length of spikelet; membranous; much thinner on margins; without keels; 5 -veined. Lower glume surface asperulous; rough at apex. Lower glume apex obtuse. Upper glume orbicular; 1.4 mm long; 1.1 length of adjacent fertile lemma; membranous; without keels; 5(-7) -veined. Upper glume apex obtuse.
Morphology Reproductive morphology Flowers Florets
Fertile lemma orbicular; 1 mm long; cartilaginous; pallid; without keel. Lemma surface glabrous, or puberulous. Lemma margins involute. Lemma apex obtuse. Palea coriaceous; 2 -veined.
Morphology Reproductive morphology Flowers
Anthers 3; 0.8 mm long; yellow.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
Asia-temperate: China and eastern Asia. Asia-tropical: India, Indo-China, Malesia, and Papuasia.
Reference
Isachneae. Gilliland 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/

  • 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 2025. 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 2025. 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