Poaceae
Koeleria

Koeleria praeandina A.Molina

First published in Bol. Soc. Argent. Bot. 26: 221 (1990)
This species is accepted
The native range of this species is NW. 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: confident
[AERP]

Morphology General Habit
Perennial; caespitose. Rhizomes short. Culms geniculately ascending; 30-73 cm long; 2-3 -noded. Culm-nodes glabrous. Lateral branches lacking. Leaf-sheaths glabrous on surface, or pubescent. Ligule a ciliolate membrane; 0.7-3 mm long; truncate, or acute. Leaf-blades 2.5-19 cm long; 1.5-2 mm wide. Leaf-blade surface glabrous, or puberulous. Leaf-blade margins ciliate. Leaf-blade apex obtuse.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle; exserted, or embraced at base by subtending leaf. Peduncle pubescent above. Panicle spiciform; linear; interrupted; 3.5-17.5 cm long; 0.3-1 cm wide. Panicle axis pubescent. Spikelets solitary. Fertile spikelets pedicelled. Pedicels pubescent.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2-3 fertile florets; with a barren rhachilla extension. Spikelets cuneate; laterally compressed; 4-6 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1-1.5 mm long; pubescent. Floret callus sparsely hairy.
Fertile
Spikelets comprising 2-3 fertile florets; with a barren rhachilla extension. Spikelets cuneate; laterally compressed; 4-6 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1-1.5 mm long; pubescent. Floret callus sparsely hairy.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet; similar to fertile lemma in texture; shiny; gaping. Lower glume lanceolate; 5-5.5 mm long; 0.8-0.9 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume primary vein scaberulous (above). Lower glume apex acuminate. Upper glume lanceolate; 5-5.5 mm long; 1.1 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein scabrous (above). Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma elliptic; 4-4.5 mm long; membranous; shiny; keeled; 5 -veined. Lemma lateral veins obscure; stopping well short of apex. Lemma apex acute; muticous, or mucronate. Palea gaping. Palea keels scaberulous.
Morphology Reproductive morphology Flowers
Lodicules 2; 1 mm long; membranous. Anthers 3; 1-1.8 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; ellipsoid; laterally compressed; 2.5 mm long. Hilum elliptic. Endosperm liquid.
Distribution
South America: southern South America.
Reference
Aveneae. Molina 2005.
[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