Trisetaria panicea (Lam.) Paunero

First published in Anales Jard. Bot. Madrid 9: 524 (1950)
This species is accepted
The native range of this species is Canary Islands, W. & Central Medit. It is an annual and grows primarily in the subtropical biome.

Descriptions

Morphology General Habit
Annual. Culms erect, or geniculately ascending; 35-75 cm long. Leaf-sheaths pilose. Ligule an eciliate membrane; 1 mm long. Leaf-blades 2-13 cm long; 2-8 mm wide. Leaf-blade surface pilose; hairy on both sides.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle contracted; oblong, or ovate; interrupted; 2-15 cm long. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 3-5 fertile florets; with diminished florets at the apex. Spikelets cuneate; laterally compressed; 2.7-3.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes villous.
Fertile
Spikelets comprising 3-5 fertile florets; with diminished florets at the apex. Spikelets cuneate; laterally compressed; 2.7-3.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes villous.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma; shiny; gaping. Lower glume linear; 2.3-2.8 mm long; 0.75 length of upper glume; hyaline; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume lanceolate; 3-3.8 mm long; 1.2-1.3 length of adjacent fertile lemma; hyaline; 1-keeled; 3 -veined. Upper glume apex acuminate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; 2.5-3 mm long; membranous; shiny; without keel; 3 -veined. Lemma surface glabrous, or pubescent. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn dorsal; arising 0.66 way up back of lemma; straight, or curved, or geniculate; (1.5-)2.5-4.5(-5.5) mm long overall; without a column, or with a straight or slightly twisted column. Palea gaping; linear; hyaline. Palea keels scaberulous. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Anthers 3; 0.4-1.7 mm long. Ovary glabrous.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; 1.5 mm long. Embryo 0.1-0.15 length of caryopsis. Hilum punctiform.
Distribution
Europe: northern, southwestern, and southeastern. Africa: north and Macaronesia.
Reference
Aveneae. Gr Extremad 1993.
[GB]

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]

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