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Montana Field Guide

Montana Field Guides

European Mountain-ash - Sorbus aucuparia
Other Names:  Rowan

Non-native Species

Global Rank: G5
State Rank: SNA
C-value: 1

Agency Status


External Links

General Description
Tree to 6 m tall. Stems purple, grayish-pilose; buds gray-lanate. Leaves glabrous to strigose with 11 to 15 lanceolate leaflets 2–6 cm long. Inflorescence flat-topped to hemispheric. Flowers: calyx pilose; sepals <1 mm long; petals 4–5 mm long. Pomes red, ca. 10 mm long (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Flathead and Missoula counties. Introduced as an ornamental throughout temperate North America; native to Europe (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 15

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



(Observations spanning multiple months or years are excluded from time charts)



  • Literature Cited AboveLegend:   View Online Publication
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Thompson, Scott K. 2002. Browse condition and trend on Montana ungulate ranges. M.Sc. Thesis. Bozeman, MT: Montana State University. 147 p.
  • Web Search Engines for Articles on "European Mountain-ash"
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Citation for data on this website:
European Mountain-ash — Sorbus aucuparia.  Montana Field Guide.  .  Retrieved on , from