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Montana Field Guide

Montana Field Guides

Purple Goat's-beard - Tragopogon porrifolius
Other Names:  Purple Salsify, Jerusalem Star, Vegetable Oyster

Non-native Species

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

Agency Status


External Links

General Description
Stems 30–80 cm. Cauline leaves 2–25 cm long, recurved at the tip. Involucre 2–3 cm high, to 5 cm in fruit; peduncle inflated and tapering to the involucre. Rays purple; ligules 15–20 mm long; the outer shorter or equal to the phyllaries. Achene 2–3 cm long including the beak (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range Range Descriptions


Range Comments
Non-native, cultivated.

Observations in Montana Natural Heritage Program Database
Number of Observations: 49

(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)

Predicted Suitable Habitat Model

This species has a Predicted Suitable Habitat Model available.

To learn how these Models were created see


  • 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?
    • Jones, W. W. 1901. Preliminary flora of Gallatin County. M.S. Thesis. Bozeman, MT: Montana State College. 78 pp.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2022. Manual of Montana Vascular Plants, Second Edition. Fort Worth, TX: BRIT Press. viii + 779 p.
  • Web Search Engines for Articles on "Purple Goat's-beard"
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Citation for data on this website:
Purple Goat's-beard — Tragopogon porrifolius.  Montana Field Guide.  .  Retrieved on , from