Poaceae
Isachne

Isachne eberhardtii A.Camus

First published in Bull. Mus. Natl. Hist. Nat. 25: 671 (1919)
This species is accepted
The native range of this species is Vietnam. It is an annual and grows primarily in the seasonally dry 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: threatened. Confidence: confident
[AERP]

Morphology General Habit
Annual. Culms decumbent; 10-15 cm long; rooting from lower nodes. Culm-nodes pubescent. Leaf-sheaths outer margin hairy. Ligule a ciliate membrane. Leaf-blades lanceolate; 4-5 cm long; 7-12 mm wide; stiff. Leaf-blade midrib conspicuous. Leaf-blade surface pubescent; sparsely hairy; hairy abaxially, or on both sides; with tubercle-based hairs. Leaf-blade margins cartilaginous.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; ovate; 2.5-3.5 cm long; 1.5 cm wide. Primary panicle branches ascending, or spreading. Panicle branches with scattered hairs. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets orbicular; dorsally compressed; 2-2.5 mm long; breaking up at maturity; disarticulating above glumes but not between florets.
Fertile
Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets orbicular; dorsally compressed; 2-2.5 mm long; breaking up at maturity; disarticulating above glumes but not between florets.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes deciduous; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume orbicular; 2-2.5 mm long; 1.1 length of spikelet; membranous; without keels; 9 -veined. Lower glume surface pubescent. Lower glume apex obtuse. Upper glume orbicular; 2-2.5 mm long; 1.1 length of spikelet; membranous; without keels; 9 -veined. Upper glume surface pubescent. Upper glume apex obtuse.
Morphology Reproductive morphology Flowers Florets
Fertile lemma ovate; 2-2.5 mm long; cartilaginous; without keel. Lemma margins involute. Lemma apex obtuse. Palea cartilaginous; 2 -veined.
Morphology Reproductive morphology Flowers
Anthers 3.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
Asia-tropical: Indo-China.
Reference
Isachneae. Lecomte 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

  • 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