Poaceae
Koeleria

Koeleria vallesiana (Honck.) Gaudin

First published in Alpina 3: 47 (1808)
This species is accepted
The native range of this species is W. & W. Central Europe to NW. Africa. 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: not threatened. Confidence: confident
[AERP]

Morphology General Habit
Perennial; caespitose. Butt sheaths scarious; not bulbous, or thickened and forming a bulb; persistent and investing base of culm; with fibrous dead sheaths. Culms erect; 10-40 cm long; 1-3 -noded. Leaves mostly basal. Ligule an eciliate membrane; 0.3-0.7 mm long. Leaf-blades filiform, or linear; flat, or convolute; 3-12 cm long; 1-3 mm wide; stiff. Leaf-blade surface ribbed; glabrous, or pubescent.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Peduncle pubescent above. Panicle spiciform; linear, or lanceolate; continuous, or interrupted; 2-5.5(-7.5) cm long; 0.6-1.2 cm wide. Panicle branches pubescent. Spikelets solitary. Fertile spikelets pedicelled. Pedicels oblong.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2-3 fertile florets; with diminished florets at the apex. Spikelets oblong, or cuneate; laterally compressed; 4.5-6.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes pubescent.
Fertile
Spikelets comprising 2-3 fertile florets; with diminished florets at the apex. Spikelets oblong, or cuneate; laterally compressed; 4.5-6.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes pubescent.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; reaching apex of florets, or shorter than spikelet; similar to fertile lemma in texture; shiny; gaping. Lower glume lanceolate; 3.5-5.5 mm long; 0.7-0.8 length of upper glume; membranous; much thinner on margins; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume surface glabrous. Lower glume apex acute. Upper glume elliptic; 4-6.3 mm long; 1-1.1 length of adjacent fertile lemma; membranous; with hyaline margins; 1-keeled; 3 -veined. Upper glume primary vein scabrous. Upper glume surface glabrous. Upper glume apex acute; muticous, or mucronate, or awned; 1 -awned. Upper glume awn 0-0.4 mm long.
Morphology Reproductive morphology Flowers Florets
Fertile lemma elliptic; 4-5.3(-5.7) mm long; membranous; much thinner on margins; shiny; keeled; keeled above; 3 -veined. Lemma surface puberulous. Lemma apex acute; muticous, or mucronate. Palea gaping. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 2; oblong; membranous; 2-toothed. Anthers 3; (1.7-)2-2.5(-2.7) mm long. Ovary glabrous.
Distribution
Europe: northern, central, southwestern, and southeastern. Africa: north.
Reference
Aveneae. TAC.
[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