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Montana Field Guide

Montana Field Guides

Stemless Four-nerve-daisy - Hymenoxys acaulis
Other Names:  Tetraneuris acaulis

Native Species

Global Rank: G5
State Rank: S4S5

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 4

External Links






 
General Description
Caudex usually branched, often mat-forming. Stems simple, erect, scapose, 4–15 cm. Herbage sparsely to densely villous. Leaf blades linear-oblanceolate to oblong, entire, 1–5, cm long. Heads solitary; involucres 5–10 mm high; phyllaries subequal, lanceolate, densely villous, sometimes purple-tipped. Ray ligules 6–10 mm long. Disk corollas 3–5 mm long, puberulent. Achenes 2–4 mm long; pappus scales 5 to 8 (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Our plants are variety acaulis. Lesica (2012) treats this species in the genus Tetraneuris.

Species Range
Montana Range

Year-round
 


Range Comments
AB, SK south to NM and TX (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 222

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

Recency

 

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



Habitat
Stony soil of grasslands, stream terraces; plains, valleys (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
  • Additional ReferencesLegend:   View Online Publication
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    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Peterson, J.G. 1969. The food habits and summer distribution of juvenile sage grouse in central Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 39 p.
    • 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.
    • Wiman, N.G. 2001. Dynamics of leafy spurge (Euphorbia esula L.) infested plant communities influenced by flea beetles in the Aphthona complex (Colepotera: Chrysomelidae). M.Sc. Thesis. Bozeman, MT: Montana State University. 148 p.
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Citation for data on this website:
Stemless Four-nerve-daisy — Hymenoxys acaulis.  Montana Field Guide.  .  Retrieved on , from