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Distribution by County   3014    
Epilobium pygmaeum  (Speg.) Hoch & P. H. Raven, illeg.

(not an active name)
Smooth boisduvalia, Smooth spike primrose
Epilobium pygmaeum is an annual herb that is native to California, and also found elsewhere in North America and beyond.
Record Count by County

Alameda: 16 Lassen: 30 Plumas: 14 Siskiyou: 3
Amador: 3 Los Angeles: 5 Riverside: 29 Solano: 17
Butte: 41 Madera: 1 Sacramento: 30 Sonoma: 7
Calaveras: 2 Marin: 11 San Benito: 19 Stanislaus: 8
Colusa: 2 Mendocino: 5 San Diego: 23 Sutter: 3
Contra Costa: 25 Merced: 11 San Joaquin: 3 Tehama: 13
El Dorado: 1 Modoc: 61 San Luis Obispo: 21 Trinity: 2
Fresno: 18 Monterey: 15 San Mateo: 5 Tulare: 3
Glenn: 4 Napa: 17 Santa Barbara: 9 Ventura: 32
Humboldt: 4 Nevada: 7 Santa Clara: 6 Yolo: 17
Kern: 5 Orange: 1 Shasta: 5 Yuba: 3
Lake: 10 Placer: 3 Sierra: 6

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2026. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 04/22/2026).