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Montana Field Guide

Montana Field Guides

Blackspot Hornpoppy - Glaucium corniculatum

Exotic Species (not native to Montana)

Global Rank: GNR
State Rank: SNA

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

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General Description
Annual or biennial with white-hairy foliage and yellow sap. Stems branched, to 50 cm. Leaves oblanceolate, deeply pinnately lobed, to 15 cm long; the upper ovate and clasping. Flowers solitary, long-stalked in upper leaf axils; sepals 2, 15–30 mm long; petals 4, orange to red with a black base, 20–35 mm long; stamens many. Capsules ascending, linear, slightly curved, 12–20 cm long, pubescent (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Collected once in Stillwater County in agricultural field (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Habitat
Weedy areas such as agricultural fields.

References
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Citation for data on this website:
Blackspot Hornpoppy — Glaucium corniculatum.  Montana Field Guide.  .  Retrieved on , from