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Montana Field Guide

Montana Field Guides

Thick-leaf Groundsel - Senecio crassulus


Global Rank: G5
State Rank: S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 7

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General Description
Fibrous-rooted from a short rhizome. Stems ascending to erect, 20–40 cm. Herbage glabrous. Leaves thick, basal and cauline, becoming sessile above; blades oblanceolate to oblong, 2–12 cm long, serrate. Inflorescence corymbiform of 3 to 12 heads. Heads radiate; involucres 8–12 mm high; phyllaries 8 to 21, glabrous, conspicuously black-tipped. Rays 5 to 13; ligules 8–18 mm long. Disk corollas 7–10 mm long. Achenes 2–4 mm long, glabrous (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
OR to MT south to NV, UT and NM (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 7

(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
Moist meadows, open forest, often near late-melting snow; upper montane, subalpine (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Thick-leaf Groundsel — Senecio crassulus.  Montana Field Guide.  .  Retrieved on , from