Poaceae
Lepturus

Lepturus xerophilus Domin

First published in Biblioth. Bot. 20(85): 412 (1915)
This species is accepted
The native range of this species is N. Australia. It is a perennial 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: not threatened. Confidence: confident
[AERP]

Morphology General Habit
Annual. Culms geniculately ascending; 30-60 cm long. Ligule a ciliolate membrane. Leaf-blades 2.5-10 cm long; 2-5 mm wide.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes 1; single; straight, or flexuous; bilateral; 2-7 cm long. Rhachis fragile at the nodes; subcylindrical and excavated; puberulous on surface; glabrous on margins. Spikelet packing adaxial; regular; 2 -rowed. Rhachis internodes oblong; 5-7 mm long. Rhachis internode tip transverse; flat. Spikelets sunken; solitary. Fertile spikelets sessile.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; dorsally compressed; acuminate; 4-6 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base truncate; attached transversely.
Fertile
Spikelets comprising 2 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; dorsally compressed; acuminate; 4-6 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base truncate; attached transversely.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes one the lower absent or obscure; exceeding apex of florets; firmer than fertile lemma. Upper glume lanceolate; 4-6 mm long; 1.4-1.5 length of adjacent fertile lemma; coriaceous; without keels; 11 -veined. Upper glume surface puberulous. Upper glume apex attenuate; awned; 1 -awned. Upper glume awn 2-14 mm long.
Morphology Reproductive morphology Flowers Florets
Fertile lemma elliptic; 2.8-3 mm long; membranous; without keel; 3 -veined. Lemma surface asperulous. Lemma apex acute. Palea 1 length of lemma; 2 -veined. Rhachilla extension 0.2 length of fertile floret.
Morphology Reproductive morphology Flowers
Lodicules 2. Anthers 3. Stigmas 2.
Morphology Reproductive morphology Fruits
Caryopsis with free soft pericarp; oblong; dorsally compressed; 2 mm long. Embryo 0.6 length of caryopsis. Hilum elliptic.
Distribution
Australasia: Australia.
Reference
Leptureae. WDC.
[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