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Montana Field Guide

Montana Field Guides

Giant Pinedrops - Pterospora andromedea

Native Species

Global Rank: G5
State Rank: S4S5

Agency Status
MNPS Threat Rank:

External Links

General Description
Achlorophyllous, mycotrophic, perennial herb. Stems erect, unbranched, to 170 cm, dark reddish-brown, densely glandular hairy; stalks hardened, persistent, drying dark brown. Leaves scale-like, alternate, sessile, lance-shaped, reddish-brown. Inflorescence a crowded, elongate, terminal raceme of numerous, nodding flowers. Flowers hypogynous, 5-merous; calyx lobes linear-lanceolate, red, glandular-hairy; corolla urn-shaped, lobes revolute, yellowish, glabrous; stamens 10; ovary superior. Fruit a globose, 5-chambered capsule (Stickney in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range


Range Comments
Western North America from British Columbia to Saskatchewan south to California and west Texas and disjunct in the east from from Ontario to Prince Edward Island south to Wisconsin and New Hampshire (historical) (Kartesz 1999). May also occur in Sonora.

Observations in Montana Natural Heritage Program Database
Number of Observations: 125

(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)


  • Additional ReferencesLegend:   View Online Publication
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    • Jones, W. W. 1901. Preliminary flora of Gallatin County. M.S. Thesis. Bozeman, MT: Montana State College. 78 pp.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
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Citation for data on this website:
Giant Pinedrops — Pterospora andromedea.  Montana Field Guide.  .  Retrieved on , from