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Family	Scientific Name	Common Name	Habitat	Distribution
Onagraceae	Epilobium brachycarpum		Railroad yards, a waif.	QC, ON, and BC south to MN, w. NE, NM, AZ, CA, and Mexico.
Onagraceae	Epilobium ciliatum ssp. ciliatum	American Willow-herb	Bogs, seeps, disturbed wet places (such as moist edges of logging roads).	NL (Newfoundland) and NL (Labrador) west to AK, south to VA, w. NC, nw. SC (Bradley et al. [in prep.]), ne. TN, IN, IA, CA, TX, Mexico, Central America; disjunct in Chile and Argentina.
Onagraceae	Epilobium ciliatum ssp. glandulosum	Northern Willow-herb	Seeps, other wet habitats.	NL west to AK, south to n. NJ, NY, n. OH, MI, WI, MN, SD, NM, AZ, CA; e. Asia.
Onagraceae	Epilobium coloratum	Bronze Willow-herb, Eastern Willow-herb	Seepages, streambanks, other moist open places.	ME west to MN, south to NC, n. GA, AL, AR, and TX; allegedly disjunct in Hispaniola.
Onagraceae	Epilobium densum	Northeastern Willow-herb, Downy Willow-herb, Soft Willow-herb	Marshes, bogs.	QC west to MN, south to s. NJ, n. VA (?), WV, OH, IN, c. IL, and IA. Reported for Arlington County, VA; the single record is regarded as questionable.
Onagraceae	Epilobium hirsutum	Hairy Willow-herb	Disturbed areas.	Native of Eurasia. Naturalized south to s. PA (Rhoads & Klein 1993; Rhoads & Block 2007), MD, and WV (Kartesz 1999, 2010).
Onagraceae	Epilobium leptophyllum	Narrowleaf Willow-herb, American Marsh Willow-herb	Bogs, fens, seepages, and boggy meadows.	NL (Newfoundland) and NT west to BC and AK, south to w. NC, ne. TN, KS, ne. TX (Mink, Singhurst, & Holmes 2011b), and CA.
Onagraceae	Epilobium palustre	Marsh Willowherb	Bogs, wooded swamps.	Circumboreal, south in North America to PA, MI, MN, NE, NM, and CA.
Onagraceae	Epilobium parviflorum	Smallflower Hairy Willowherb	Moist shores, cattail marshes, drawdown areas.	Native of Europe. Reported for WV (Elizabeth Byers, pers.comm., 2021) and for e. KY (V. Voelker, pers.comm., 2024).

Family

Scientific Name

Common Name

Habitat

Distribution

Image

Onagraceae

Epilobium brachycarpum

Railroad yards, a waif.

QC, ON, and BC south to MN, w. NE, NM, AZ, CA, and Mexico.

Onagraceae

Epilobium ciliatum ssp. ciliatum

American Willow-herb

Bogs, seeps, disturbed wet places (such as moist edges of logging roads).

NL (Newfoundland) and NL (Labrador) west to AK, south to VA, w. NC, nw. SC (Bradley et al. [in prep.]), ne. TN, IN, IA, CA, TX, Mexico, Central America; disjunct in Chile and Argentina.

Onagraceae

Epilobium ciliatum ssp. glandulosum

Northern Willow-herb

Seeps, other wet habitats.

NL west to AK, south to n. NJ, NY, n. OH, MI, WI, MN, SD, NM, AZ, CA; e. Asia.

Onagraceae

Epilobium coloratum

Bronze Willow-herb, Eastern Willow-herb

Seepages, streambanks, other moist open places.

ME west to MN, south to NC, n. GA, AL, AR, and TX; allegedly disjunct in Hispaniola.

Onagraceae

Epilobium densum

Northeastern Willow-herb, Downy Willow-herb, Soft Willow-herb

Marshes, bogs.

QC west to MN, south to s. NJ, n. VA (?), WV, OH, IN, c. IL, and IA. Reported for Arlington County, VA; the single record is regarded as questionable.