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Montana Field Guide

Montana Field Guides

Jimsonweed - Datura stramonium
Other Names:  Devil's Snare

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Non-native Species

Global Rank: GU
State Rank: SNA

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

External Links

 
General Description
Annual. Stems erect, branched, 30–150 cm. Herbage glabrate to puberulent, especially on the veins, poisonous. Leaf blades ovate, 6–18 cm long, sharply lobed. Inflorescence of solitary, axillary flowers. Flowers showy; calyx tubular, 3–5 cm long with short lanceolate lobes; corolla white to purple, funnelform, the tube 5–8 cm long, the limb 3–5 cm across with shallow, mucronate lobes. Fruit an erect, spiny to unarmed, ovoid capsule 2–4 cm long, subtended by a collar formed from the calyx base (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Introduced to much of the U.S., more common in the south; native to tropical America (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 10

(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
Roadsides, railroad rights-of-way, yards, gardens; valleys (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Jimsonweed — Datura stramonium.  Montana Field Guide.  .  Retrieved on , from