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Montana Field Guides

Gronovius Dodder - Cuscuta gronovii
Other Names:  Cuscuta umbrosa

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Undetermined Origin

Global Rank: G5
State Rank: SNR

Agency Status


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General Description
Stems 0.4-0.6 mm or more in diameter. Flowers 204 mm long, on pedicels shorter than or about equaling the flowers, in loose or densely panicled cymes; calyx lobes broad, ovagte, orbicular or oblong, obtuse, overlapping, shorter than corolla tube; corollas narrowl campanualte, almost tubular, the lobes mostly shorter than the tube, ovate, obtuse, spreading; scales mostly equaling the tube, usually oblong, fringed; stamens about as longa s the lobes, filaments longer than the oval anthers; styles shorter thatn the globose-conic ovary. Fruits capsular, globose-conic to obpyriform, beaked, occasionally glandular, enveloped at base by withered corolla; seeds 1.5 mm long, 2-4 per fruit (Austin, 1986, Flora of the Great Plains).

Range Comments
Presence not confirmed for MT; WY (Sheridan County), much of southern Canada and USA (Kartesz 2009).

Growing over many different herbs and shrubs (Austin 1986).

  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2022. Manual of Montana Vascular Plants, Second Edition. Fort Worth, TX: BRIT Press. viii + 779 p.
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Citation for data on this website:
Gronovius Dodder — Cuscuta gronovii.  Montana Field Guide.  .  Retrieved on , from