Poaceae
Anthenantia

Anthenantia villosa (Michx.) P.Beauv.

First published in Ess. Agrostogr.: 48 (1812)
This species is accepted
The native range of this species is SE. U.S.A. to Texas. It is a perennial and grows primarily in the subtropical 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. Rhizomes short; scaly. Culms 70-110 cm long. Ligule a ciliolate membrane. Leaf-blades ascending, or spreading; tapering towards tip; 5-30 cm long; 5-10 mm wide. Leaf-blade margins scaberulous; tuberculate-ciliate; hairy at base. Leaf-blade apex abruptly acute, or acute.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; elliptic; 8-16 cm long; 1-2 cm wide. Primary panicle branches appressed. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 3-4 mm long; falling entire.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 3-4 mm long; 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 obovate; 3-4 mm long; 1 length of spikelet; membranous; mid-green; without keels; 5 -veined. Upper glume surface villous. Upper glume hairs white. Upper glume apex obtuse.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets male, or barren; with palea. Lemma of lower sterile floret obovate; 3-4 mm long; 1 length of spikelet; membranous; 5 -veined; villous; bearing white hairs; bearing hairs 0.3-0.5 mm long; obtuse. Fertile lemma ovate; 3-4 mm long; cartilaginous; of similar consistency above; much thinner on margins; dark brown; without keel; 3 -veined. Lemma margins flat. Lemma apex acute. Palea gaping; 1 length of lemma; cartilaginous; 2 -veined.
Morphology Reproductive morphology Flowers
Anthers 3; 2.6-2.8 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; orbicular; isodiametric; exposed between gaping lemma and palea at maturity; 1.2-1.4 mm long. Embryo 0.5 length of caryopsis.
Distribution
North America: southeast USA.
Reference
Paniceae. Gould.
[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 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