Search Field Guide
Advanced Search
Montana Field Guide

Montana Field Guides

Field Sowthistle - Sonchus arvensis

Exotic Species (not native to Montana)

Global Rank: GNR
State Rank: SNA

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 0

External Links






 
General Description
Rhizomatous perennial. Stems erect, 30–140 cm, sometimes branched above. Leaves linear-oblanceolate, pinnately lobed, 4–30 cm long, winged-petiolate below to sessile and auriculate above. Involucres 1–2 cm high; phyllaries glabrous or rarely stipitate-glandular. Ray ligules 7–13 mm long. Achenes brown, 2–4 mm long, minutely bumpy (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

We have subspecies arvensis and uliginosus (M.Bieb.) Nyman.

Species Range
Present
 


Range Comments
Introduced; across most of North America.

Summary of Observations Submitted for Montana
Number of Observations: 3

(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
Wet meadows, marshes, ditch banks, irrigated fields; plains, valleys (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
Login Logout
Citation for data on this website:
Field Sowthistle — Sonchus arvensis.  Montana Field Guide.  .  Retrieved on , from