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Montana Field Guide

Montana Field Guides

Conoid Catchfly - Silene conoidea
Other Names:  Weed Silene, Large Sand Catchfly

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Non-native Species

Global Rank: GNR
State Rank: SNA
C-value: 1

Agency Status


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General Description
Pubescent annual. Stems erect, 20–50 cm. Leaves: basal oblanceolate, 3–5 cm long, quickly deciduous; cauline lanceolate, 1–5 cm long, united around the stem. Inflorescence a glandular, open, 1- to several-flowered cyme. Flowers: calyx narrowly ovoid, ca. 25-veined, 10–25 mm long; petals white to pinkish, the blade 5–10 mm long with erose margins and 2 minute appendages; styles 3. Capsule 8–20 mm long, opening by slits (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range

Range Comments
Introduced to AB, SK south to CA, TX, MO; native to Eurasia (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 19

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



(Observations spanning multiple months or years are excluded from time charts)

Cultivated fields, disturbed grasslands, steppe; valleys (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

The following animal species have been reported as pollinators of this plant species or its genus where their geographic ranges overlap: Bombus vagans, Bombus pensylvanicus, and Bombus impatiens (Colla and Dumesh 2010).


  • Literature Cited AboveLegend:   View Online Publication
    • Colla, S.R. and S. Dumesh. 2010. The bumble bees of southern Ontario: notes on natural history and distribution. Journal of the Entomological Society of Ontario 141: 39-68.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
  • Web Search Engines for Articles on "Conoid Catchfly"
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Citation for data on this website:
Conoid Catchfly — Silene conoidea.  Montana Field Guide.  .  Retrieved on , from