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Montana Field Guide

Montana Field Guides

Canada Lettuce - Lactuca canadensis


Global Rank: G5
State Rank: SNR

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

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General Description
Annual or biennial. Stems erect, simple below, 30–200 cm. Leaf blades lanceolate, 10–35 cm long, sometimes pilose on the midvein below, deeply pinnately divided into lanceolate lobes. Involucre 10–15 mm high; phyllaries reflexed in fruit. Rays 15 to 20; ligules blue to yellow, ca. 4 mm long. Achenes 5–6 mm long; beaks 1–3 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Known from Park County. Throughout N. America (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Habitat

References
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Citation for data on this website:
Canada Lettuce — Lactuca canadensis.  Montana Field Guide.  .  Retrieved on , from