Poaceae
Axonopus

Axonopus kuhlmannii G.A.Black

First published in Advancing Frontiers Pl. Sci. 5: 156 (1963)
This species is accepted
The native range of this species is Bolivia to W. Brazil. 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
Perennial; caespitose. Stolons present. Culms erect; 50-100 cm long; 7-8 -noded. Culm-nodes glabrous, or pubescent. Lateral branches ample. Leaf-sheaths 2-10 cm long; narrower than blade at the collar; glabrous on surface, or pubescent. Ligule a ciliolate membrane; 0.2 mm long. Leaf-blades 15-40 cm long; 1.5-3 mm wide. Leaf-blade midrib conspicuous. Leaf-blade surface scabrous; glabrous. Leaf-blade apex attenuate; simple, or filiform.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes; terminal and axillary; with 1-2 peduncles per sheath. Peduncle 15-30 cm long. Racemes 3-10; digitate; spreading; flexuous; unilateral; 5-12 cm long. Central inflorescence axis 1.5-3 cm long. Rhachis angular; 0.6-0.7 mm wide; glabrous on surface; smooth on margins, or scaberulous on margins; glabrous on margins. Spikelet packing adaxial; 7-11 spikelets per cm. Spikelets appressed; solitary. Fertile spikelets sessile.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; acute; 2 mm long; 0.5-0.7 mm wide; falling entire.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; acute; 2 mm long; 0.5-0.7 mm wide; falling entire.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes one the lower absent or obscure; reaching apex of florets; thinner than fertile lemma. Upper glume 1 length of spikelet; membranous; 3-5 -veined. Upper glume primary vein absent, or distinct. Upper glume margins ciliate. Upper glume hairs 0.5-1 mm long.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; 1.3 length of fertile lemma; 1 length of spikelet; 3-5 -veined; without midvein, or with obscure midvein. Fertile lemma 1.5 mm long; indurate; dark brown; without keel. Lemma margins involute. Lemma apex obtuse; without ornament. Palea involute; indurate.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
South America: Brazil.
Reference
Paniceae. Black 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

    • '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 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