Search Field Guide
Advanced Search
Montana Field Guide

Montana Field Guides

Torrey Bitterweed - Hymenoxys torreyana
Other Names:  Tetraneuris torreyana

Potential Species of Concern

Global Rank: G4
State Rank: S3S4

Agency Status
MNPS Threat Rank:

External Links

General Description
Caudex branched, mat-forming. Stems simple, erect, scapose, 3–10 cm. Herbage punctate-glandular, villous on stem and leaf bases. Leaf blades narrowly oblanceolate, entire, 1–5, cm long. Heads solitary; involucres 7–11 mm high; phyllaries subequal, lanceolate to ovate, scarious-margined, glandular, villous. Ray ligules 7–11 mm long. Disk corollas 4–5 mm long, glandular. Achenes 3–4 mm long; pappus scales 5–7 (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Lesica (2012) treats this species in the genus Tetraneuris.

Species Range

Range Comments
Carbon County, MT; WY, UT and CO (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 35

(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)

Open ridges and meadows at low to high elevations in the mountains, often on limestone-derived soil in juniper woodlands, mountain mahogany woodland, and cushion plant grasslands.

  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Lesica, P. and P.L. Achuff. 1992. Distribution of vascular plant species of special concern and limited distribution in the Pryor Mountain desert, Carbon County, Montana. Unpublished report to the Bureau of Land Management. Montana Natural Heritage Program, Helena, MT. 105 pp.
    • Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
  • Web Search Engines for Articles on "Torrey Bitterweed"
  • Additional Sources of Information Related to "Dicots"
Login Logout
Citation for data on this website:
Torrey Bitterweed — Hymenoxys torreyana.  Montana Field Guide.  .  Retrieved on , from