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Montana Field Guide

Montana Field Guides

Smooth Spike-primrose - Epilobium pygmaeum
Other Names:  Boisduvalia glabella, Epilobium campestre


Global Rank: G5
State Rank: SNR

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 4

External Links






 
General Description
Fibrous-rooted annual. Stems ascending to erect, puberulent, 5–25 cm, branched at the base. Herbage glabrate. Leaves alternate, sessile, lanceolate to oblanceolate, weakly dentate, 5–20 mm long. Inflorescence a crowded, leafy-bracteate spike. Flowers pink; hypanthium ca. 1 mm long; sepals erect, ca. 1 mm long; petals 2–3 mm long. Capsule sessile, clavate, 6–8 mm long, puberulent with a beak 1 mm long or longer; seeds reticulate, in 4 or more rows, without a coma (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Wagner et al. (2007, Syst. Bot. Monogr. Vol. 83) treat this as Epilobium campestre (Jepson) Hoch & W.L. Wagner.

Species Range
Present
 


Range Comments
BC to SK south to CA, UT, WY, SD and Mexico (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 9

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

Recency

 

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



Habitat
Mossy shores of shallow ponds, ephemeral wetlands; plains, valleys (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Smooth Spike-primrose — Epilobium pygmaeum.  Montana Field Guide.  .  Retrieved on , from