- Epilobium adenocaulon
- Epilobium alsinifolium, Chickweed Willowherb
- Epilobium alsinoides
- Epilobium amurense
- Epilobium anagallidifolium, Alpine Willowherb
- Epilobium arcticum, Arctic willowherb
- Epilobium behringianum
- Epilobium billardiereanum, Smooth Willow Herb
- Epilobium billardierianum, Aboriginal willowherb
- Epilobium brachycarpum, Tall annual willowherb
- Epilobium brevifolium
- Epilobium brevistylum
- Epilobium brunnescens, New Zealand Willowherb
- Epilobium canum, Hummingbird trumpet
- Epilobium ciliatum, Glandular Willow-herb
- Epilobium clavatum, Talus willowherb
- Epilobium cleistogamum, Selfing willowherb
- Epilobium coloratum, Purpleleaf willowherb
- Epilobium curtisiae, Bald-seeded Willow-herb
- Epilobium davuricum, Dahurian willowherb
- Epilobium delicatum
- Epilobium densiflorum, Denseflower willowherb
- Epilobium denticulatum
- Epilobium ecomosum
- Epilobium foliosum, Leafy willowherb
- Epilobium franciscanum
- Epilobium fugitivum
- Epilobium glaberrimum, Glaucus willowherb
| - Epilobium glandulosum
- Epilobium gunnianum, Gunns Willow herb
- Epilobium halleanum, Glandular willowherb
- Epilobium hirsutum, Great Willowherb
- Epilobium hirtigerum, Hairy Willow-herb
- Epilobium hohuanense
- Epilobium hornemannii, Hornemanns willowherb
- Epilobium howellii, Yuba Pass willowherb
- Epilobium komarovianum, Bronzy Willowherb
- Epilobium krulleanum
- Epilobium lactiflorum, Milkflower willowherb
- Epilobium lanceolatum, Spear-leaved Willowherb
- Epilobium leptocarpum, Slenderfruit willowherb
- Epilobium leptophyllum, Bog willowherb
- Epilobium luteum, Yellow willowherb
- Epilobium minutum, Chaparral willowherb
- Epilobium mirabile, Olympic Mountain willowherb
- Epilobium montanum, Broad-leaved Willowherb
- Epilobium nankotaizanense
- Epilobium nevadense, Nevada willowherb
- Epilobium nivium, Snow Mountain willowherb
- Epilobium nummulariifolium
- Epilobium obcordatum, Rockfringe
- Epilobium obscurum, Short-fruited Willowherb
- Epilobium oreganum, Grants Pass willowherb
- Epilobium oregonense, Oregon willowherb
- Epilobium pallidiflorum, Showy Willow-herb
- Epilobium pallidum, Largeflower spike-primrose
| - Epilobium palustre, Marsh Willowherb
- Epilobium parviflorum, Hoary Willowherb
- Epilobium pedunculare, Rockery Willowherb
- Epilobium pengii
- Epilobium perpusillum
- Epilobium pictum
- Epilobium platystigmatosum
- Epilobium pygmaeum, Smooth spike-primrose
- Epilobium rigidum, Stiff willowherb
- Epilobium roseum, Pale Willowherb
- Epilobium rotundifolium
- Epilobium sarmentaceum
- Epilobium saximontanum, Rocky Mountain willowherb
- Epilobium septentrionale, Northern willowherb
- Epilobium sertulatum
- Epilobium siskiyouense, Siskiyou willowherb
- Epilobium strictum, Downy willowherb
- Epilobium suffruticosum, Shrubby willowherb
- Epilobium taiwanianum
- Epilobium tasmanicum, Snow Willow herb
- Epilobium tetragonum, Square-stalked Willowherb
- Epilobium torreyi, Torreys willowherb
- Epilobium watsonii
- Epilobium willisii
- Epilobium x_wisconsinense
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