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Montana Field Guide

Montana Field Guides

Jimsonweed - Datura stramonium

Exotic Species (not native to Montana)

Global Rank: GU
State Rank: SNA

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

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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).

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