Poaceae
Koeleria
Koeleria oreophila

Koeleria oreophila subsp. rosei (Scribn. & Merr.) Barberá, Quintanar, Soreng & P.M.Peterson

First published in Phytoneuron 2019-46: 6 (2019)
This subspecies is accepted
The native range of this subspecies is Central Mexico. 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; caespitose; clumped densely. Culms geniculately ascending; 20-40 cm long. Culm-internodes distally pubescent. Leaf-sheaths longer than adjacent culm internode; puberulous. Ligule an eciliate membrane; 2 mm long; truncate. Leaf-blades flat, or involute; 5-12 cm long; 3-5 mm wide. Leaf-blade surface puberulous; hairy adaxially.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle spiciform; linear; 6-10 cm long; 1-1.5 cm wide. Primary panicle branches 1-3 cm long. Panicle branches pubescent. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 6 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 2 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 6 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet; thinner than fertile lemma; shiny; gaping. Lower glume lanceolate; 4 mm long; 0.75 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume margins ciliolate (above). Lower glume apex acute. Upper glume lanceolate; 5 mm long; 1-1.1 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume margins ciliate (above). Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; 4.5-5 mm long; membranous; shiny; keeled; 5 -veined. Lemma surface pilose. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn dorsal; arising 0.5 way up back of lemma; curved; 4 mm long overall; limb ciliate. Palea gaping; 1 length of lemma; hyaline. Palea keels scaberulous. Palea surface pilose; hairy on margins.
Morphology Reproductive morphology Flowers
Anthers 3.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
North America: Mexico.
Reference
Aveneae. Scribner & Merr. 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