Poaceae
Axonopus

Axonopus singularis (Swallen) Alicia López & Morrone

First published in Syst. Bot. 37: 675 (2012)
This species is accepted
The native range of this species is Brazil (Maranhão, Goiás). 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: not threatened. Confidence: low confidence
[AERP]

Morphology General Habit
Annual. Culms erect; 10-75 cm long. Ligule a ciliolate membrane; 0.5 mm long. Leaf-blades conduplicate; 5-15 cm long; 3-8 mm wide.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes 2-7; digitate; unilateral; 3-14 cm long. Rhachis narrowly winged; angular; 0.5 mm wide; scabrous on margins. Spikelet packing adaxial; regular; 1 -rowed. Spikelets solitary. Fertile spikelets sessile.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets obovate (turbinate); turbinate; dorsally compressed; 3.5-4 mm long; falling entire.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets obovate (turbinate); turbinate; dorsally compressed; 3.5-4 mm long; falling entire.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes one the lower absent or obscure; exceeding apex of florets; thinner than fertile lemma. Upper glume ovate; spurred; 3.5-4 mm long; membranous; without keels; 3 -veined. Upper glume surface pubescent; hairy between veins; with a transverse fringe of hair (0.7-1mm). Upper glume hairs red. Upper glume apex obtuse.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; without significant palea. Lemma of lower sterile floret elliptic; 1 length of spikelet; membranous; 3 -veined; pubescent; with a transverse fringe of hair; bearing red hairs; bearing hairs 0.5 mm long; obtuse. Fertile lemma obovate; 2.2-2.5 mm long; indurate. Lemma margins involute. Lemma apex obtuse; pubescent. Palea indurate.
Distribution
South America: Brazil.
Reference
Paniceae. 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

    • '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