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Montana Field Guide

Montana Field Guides

Hairy Willowherb - Epilobium ciliatum
Other Names:  Epilobium glandulosum [in part], Epilobium watsonii


Global Rank: G5
State Rank: S4S5

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

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General Description
Perennial sometimes with basal turions and rhizomes. Stems erect, 10–80 cm, glabrous to puberulent, sometimes glandular above. Herbage glabrate. Leaves opposite, short-petiolate; blades lanceolate, 2–8 cm long, serrulate, alternate in the inflorescence. Inflorescence leafy-bracted racemes. Flowers white to purple; hypanthium 1–2 mm long; sepals 1–3 mm long, often pink; petals 2–8 mm long. Capsule pedicelate, 2–6 cm long, puberulent; seeds papillose in ridges with a deciduous coma (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Our plants are subspecies ciliatum and glandulosum (Lehm.) Hoch & P.H. Raven.

Species Range
Present
 


Range Comments
North America, Asia, S. America (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 34

(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
Moist soil along streams, lakes; montane, subalpine (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Hairy Willowherb — Epilobium ciliatum.  Montana Field Guide.  .  Retrieved on , from