Nodding Helianthella - Helianthella quinquenervis
(see State Rank Reason below)
MNPS Threat Rank
State Rank Reason (see State Rank above)
Helianthella quiquenervis occurs in south-central Montana where populations appear to be stable. However, many collections of Helianthella uniflora have been mis-identified and called H. quinquenervis.
- Details on Status Ranking and Review
ScoreF - 20,000-200,000 sq km (~8,000-80,000 sq mi)
Area of Occupancy
ScoreE - 26-125 4-km2 grid cells
Number of Populations
ScoreC - 21 - 80
Number of Occurrences or Percent Area with Good Viability / Ecological Integrity
ScoreC - Few (4-12) occurrences with excellent or good viability or ecological integrity
ScoreC - Moderate. Generalist or community with some key requirements scarce
ScoreD - Low
Stems 50–150 cm. Herbage glabrate to sparsely strigose. Leaf blades oblanceolate to elliptic, often 5-veined, 8–25 cm long. Heads often nodding; involucres ca. 3 cm across; phyllaries lanceolate to ovate, acuminate; receptacle scales soft. Ray ligules 2–4 cm long. Disk corollas 4–7 mm long. Achenes 8–10 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
OR, MT, SD south to AZ and NM (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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Map Help and Descriptions
(Observations spanning multiple months or years are excluded from time charts)
- Literature Cited AboveLegend: View Online Publication
- Great Plains Flora Association (McGregor, R.L., coordinator, and T.M. Barkley, R.E. Brooks, and E.K. Schofield - eds.). 1986. Flora of the Great Plains. Lawrence, KS: Univ. Press Kansas. 1392 pp.
- Additional ReferencesLegend: View Online Publication
Do you know of a citation we're missing?
- Joslin, G.J. 1975. Behavior and environmental selection by Elk (Cervus canadensis nelsoni) during surrmer and fall in the First and Second Yellow Mule drainages, Madison County, Montana. M.Sc. Thesis. Bozeman, Montana: Montana State University, Bozeman. 65 p.
- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.