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Montana Field Guide

Montana Field Guides

Tall woolly-heads - Psilocarphus elatior

Native Species

Global Rank: G4
State Rank: SU
(see State Rank Reason below)

Agency Status
MNPS Threat Rank:
C-value: 3

External Links

State Rank Reason (see State Rank above)
Likely introduced into Montana, though native to other parts of the Pacific Northwest. Species is adventive and appears to favor areas with soil disturbance.
General Description
Similar to P. brevissimus. Leaves linear to oblanceolate, 10–35 mm long. Heads 6–8 mm high; receptacle scales, 2–4 mm long. Achenes cylindric, terete, 1–2 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Diagnostic Characteristics
Very difficult to distinguish from other members of the genus

Species Range

Range Comments
BC south to CA, ID and MT. Collected in Lincoln County (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 3

(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)

Vernally moist areas, particularly roadsides and other disturbed habitats in western Montana.

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Citation for data on this website:
Tall woolly-heads — Psilocarphus elatior.  Montana Field Guide.  .  Retrieved on , from