Asteraceae
Erigeron

Erigeron uniflorus L.

First published in Sp. Pl.: 864 (1753)
This species is accepted
The native range of this species is Europe to S. Central China, New Guinea. It is a perennial and grows primarily in the subalpine or subarctic 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]

Ghazanfar, S. A., Edmondson, J. R. & Hind, D. J. N. (Eds). (2019). Flora of Iraq, Volume 6: Compositae.Kew Publishing

Morphology General Habit
Dwarf perennial, 2–15(–20) cm tall, stems always simple with a single capitulum, several from a rhizomatous rootstock, clothed with spreading white hairs, with or without shorter hairs and a few glands
Morphology Leaves
Basal leaves linear-oblanceolate, obtuse to spatulate and often emarginate, mostly 12–35 × 2–7 mm, sparingly pilose or ciliate at least along basal margins; cauline leaves lanceolate to linear, indumentum similar, upper reducing and bract-like
Morphology Reproductive morphology Inflorescences
Inflorescence scapiform
Morphology Reproductive morphology Inflorescences Capitulum
Capitula heterogamous and radiate, lacking intermediate female florets; involucre 10–15 mm in diameter; phyllaries narrowly to linear-lanceolate, acute, inner 4–9 mm long, all thinly to densely clothed with long white hairs (often dense and deflexed at base of capitulum), often blackish or purplish at least about tip
Morphology Reproductive morphology Flowers Florets
Female florets usually all radiate, 5–8 mm, rays 2.5–5.5 mm, narrow, purple to lilac or white; disc florets 3–3.5(–4) mm; eligulate female flowers with a 2 mm filiform tube occasionally present, at least in Iraq
Morphology Reproductive morphology Fruits
Achenes 2–2.5 mm, pale stramineous, pubescent; pappus 3–4.5 mm, brownish.
Ecology
On stony mountain tops, on alpine rocks on the slopes of high mountains, also near a mountain stream; alt. 2250–3600 m;
Phenology
flowering & fruiting: Aug.-Sep.
Distribution
Only found in a restricted area on the highest mountains of Iraq. Arctic and subarctic Europe, also in the high mountain ranges of C & S Europe southwards to the Pyrenees and Corsica, eastwards to Bulgaria, mountains of SW & C Asia from Turkey, Lebanon and Caucasus to Tibet; also in Arctic N America.
[FIQ]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • Flora of Iraq

    • Ghazanfar, S. A., Edmondson, J. R. (Eds). (2013-2019). Flora of Iraq, Volumes 5.1, 5.2 and 6.0. Kew Publishing
    • 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

  • Kew Science Photographs

    • Copyright applied to individual images