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Richardson's Bitterweed - Hymenoxys richardsonii
Native Species
Global Rank:
G5
State Rank:
S4S5
C-value:
4
Agency Status
USFWS:
USFS:
BLM:
External Links
General Description
Caudex usually branched. Stems erect, often branched above, 5–20 cm. Herbage glandular-punctate, villous, sparsely so above the base. Leaves basal and cauline, 1–15 cm long; blades pinnately divided into 3 or 5 remote, linear segments. Heads 1 to 5; involucres 5–10 mm high; phyllaries villous, glandular, in 2 unequal series; outer lanceolate, united at the base; inner obovate, mucronate. Rays 8 to 14; ligules 7–15 mm long, glandular. Disk corollas 3–4 mm long, glandular. Achenes 2–3 mm long; pappus scales 5 to 6 (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Our plants are variety
richardsonii.
Species Range
Montana Range
Range Descriptions
Native
Range Comments
AB, SK south to AZ, NM and TX (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Observations in Montana Natural Heritage Program Database
Number of Observations: 362
(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
Usually barren, heavy soil of grasslands, sagebrush steppe, coniferous woodlands, barren slopes; plains, valleys (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Stewardship Responsibility
References
- 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?
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.- Mackie, R.J. 1965. Range ecology and relationships of mule deer, elk, and cattle in the Missouri River breaks. Ph.D Dissertation. Bozeman, MT: Montana State University. 229 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.
- 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.
- Skinner, K.F. 1995. Plant and grasshopper community composition: indicators & interactions across three spatial scales. M.Sc. Thesis. Bozeman, MT: Montana State University. 144 p.
- Tschache, O.P. 1970. Effects of ecological changes induced by various sagebrush control techniques on small mammal populations. M.Sc. Thesis. Bozeman, MT: Montana State University. 51 p.
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