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Montana Field Guide

Montana Field Guides

Plains Spring-parsley - Cymopterus acaulis

Native Species

Global Rank: G5
State Rank: S4
C-value: 4

Agency Status


External Links

General Description
Stems solitary or few pseudoscapes, 0.5–8 cm, barely reaching above ground. Herbage glabrous. Leaves with long petioles, dilated basally, whorled at the top of the pseudoscape; blades ovate in outline, bipinnate, 1–10 cm long; ultimate divisions linear, uncrowded. Umbels usually several, dense; peduncles 2–12 cm long; rays 2–7 mm long; involucre absent; involucel bracts lanceolate, 2–8 mm long, united basally on one side of the umbellet. Flowers white, flowering early; sepals ca. 0.5 mm long. Mericarps 7–11 mm long, elliptic, glabrous; wings 1–2 mm wide, wavy; oil tubes several in the intervals (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range Range Descriptions


Range Comments
SK to MN south to OR, AZ, TX and Mexico (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 64

(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)

Sandy or clay soil of grasslands, sagebrush steppe; plains (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

  • 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?
    • Culver, D.R. 1994. Floristic analysis of the Centennial Region, Montana. M.Sc. Thesis. Montana State University, Bozeman. 199 pp.
    • Heywood, V.H. 1971. The biology and chemistry of the Umbelliferae. Academic Press, New York.
    • Quire, R.L. 2013. The sagebrush steppe of Montana and southeastern Idaho shows evidence of high native plant diversity, stability, and resistance to the detrimental effects of nonnative plant species. M.Sc. Thesis. Bozeman, MT: Montana State University. 124 p.
    • Rundquist, V.M. 1973. Avian ecology on stock ponds in two vegetational types in north-central Montana. Ph.D. Dissertation. Bozeman, MT: Montana State University. 112 p.
    • Seipel, T.F. 2006. Plant species diversity in the sagebrush steppe of Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 87 p.
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Citation for data on this website:
Plains Spring-parsley — Cymopterus acaulis.  Montana Field Guide.  .  Retrieved on , from