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Bransford, W.D. and Dolphia

Epilobium luteum

Epilobium luteum Pursh

Yellow Willowherb

Onagraceae (Evening Primrose Family)

Synonym(s):

USDA Symbol: EPLU

USDA Native Status: L48 (N), AK (N), CAN (N)

Erect, leafy stems, growing in patches, with yellow flowers in upper leaf axils.

This Epilobium is unusual in the West with its flowers of yellow rather than red or pink. Shrubby Willowherb (E. suffruticosum), with smaller flowers, is found in the mountains of central Idaho, western Montana, and Wyoming.

From the Image Gallery

3 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Fruit Type: Capsule
Size Notes: Up to about 30 inches tall.

Bloom Information

Bloom Color: White , Yellow , Green
Bloom Time: Jul , Aug , Sep

Distribution

USA: AK , CA , OR , WA
Canada: AB , BC
Native Distribution: Alaska south to northwestern California.
Native Habitat: Moist places in mountains.

National Wetland Indicator Status

Region:	AGCP	AK	AW	CB	EMP	GP	HI	MW	NCNE	WMVE
Status:		FACW	FACW							FACW

This information is derived from: U.S. Army Corps of Engineers. (2023). 2022 National Wetland Plant List, version 3.6. U.S. Army Engineer Research and Development Center, Vicksburg, MS. https://wetland-plants.usace.army.mil/. Click here for map of regions.

Web Reference

Webref 30 - Calflora (2018) Calflora
Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

USDA: Find Epilobium luteum in USDA Plants
FNA: Find Epilobium luteum in the Flora of North America (if available)
Google: Search Google for Epilobium luteum

Metadata

Record Modified: 2023-04-20
Research By: TWC Staff

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