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Montana Field Guide

Montana Field Guides

Marijuana - Cannabis sativa

Non-native Species

Global Rank: GNR
State Rank: SNA

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 1

External Links






 
General Description
Taprooted annual. Stems often branched below, to 1 m. Leaf blades palmately divided into 5 to 9 narrowly lanceolate leaflets, up to 9 cm long. Dioecious. Male flowers with pedicels to 3 mm long; sepals 2–4 mm long; Female flowers enclosed by a glandular bract. Achenes greenish, mottled with purple, 2–5 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Introduced throughout most of U.S.; native to Eurasia (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 9

(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

References
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Citation for data on this website:
Marijuana — Cannabis sativa.  Montana Field Guide.  .  Retrieved on , from