Poaceae
Koeleria

Koeleria barrosii Barberá, Quintanar, Soreng & P.M.Peterson

First published in Phytoneuron 2019-46: 4 (2019)
This species is accepted
The native range of this species is S. Chile to S. Argentina. It is a perennial and grows primarily in the temperate 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: threatened. Confidence: low confidence
[AERP]

Morphology General Habit
Perennial. Rhizomes short. Culms 37-50 cm long; 2 -noded. Leaf-sheaths glabrous on surface, or pubescent. Ligule an eciliate membrane; 2-3 mm long; glabrous on abaxial surface; erose; obtuse. Leaf-blades 4-7 cm long; 2-2.5 mm wide.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Peduncle pubescent above. Panicle contracted; lanceolate; interrupted; 7-11 cm long; 2-3 cm wide. Primary panicle branches 3 -nate; 3 cm long; bearing spikelets almost to the base. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2-3 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 6-6.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1 mm long; pilose; with 1.5 mm long hairs. Floret callus pubescent; truncate.
Fertile
Spikelets comprising 2-3 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 6-6.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1 mm long; pilose; with 1.5 mm long hairs. Floret callus pubescent; truncate.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma; shiny; gaping. Lower glume lanceolate; 5.5-7.5 mm long; 0.75 length of upper glume; membranous; much thinner on margins; purple; 1-keeled; 1 -veined. Lower glume primary vein ciliate. Lower glume lateral veins absent. Lower glume apex setaceously attenuate. Upper glume lanceolate; 6.5-9 mm long; 1 length of adjacent fertile lemma; membranous; with hyaline margins; purple; 1-keeled; 3 -veined. Upper glume apex setaceously attenuate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 6.5-7 mm long; membranous; shiny; keeled; 5 -veined. Lemma apex awned; 1 -awned. Principal lemma awn dorsal; arising 0.66 way up back of lemma; curved, or geniculate; 6-7 mm long overall; with a straight or slightly twisted column. Palea gaping; 4-5 mm long; hyaline. Palea keels scabrous. Palea apex with excurrent keel veins.
Morphology Reproductive morphology Flowers
Lodicules 2; 0.8 mm long; 2-toothed. Anthers 3; 0.8 mm long. Ovary glabrous.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; 2.5 mm long. Endosperm farinose.
Distribution
South America: southern South America.
Reference
Aveneae. Finot 2007.
[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 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