Taxon Report

Lilium washingtonianum Kell. ssp. purpurascens (Stearn) M. Skinner

purple-flowered Washington lily

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Taxon Summary

Lilium washingtonianum ssp. purpurascens, commonly known as purple-flowered Washington lily, is a perennial bulbiferous herb in the Liliaceae that is found in California and elsewhere. It occurs within Chaparral, Lower montane coniferous forest, and Upper montane coniferous forest, growing at elevations from 70 to 2750 meters. Lilium washingtonianum ssp. purpurascens is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

Classification


Scientific Name:	Lilium washingtonianum Kell. ssp. purpurascens (Stearn) M. Skinner
Common Name:	purple-flowered Washington lily
Family:	Liliaceae
Element Code:	PMLIL1A0R2
USDA Plants Symbol:	LIWAP2
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial bulbiferous herb
Blooming Period: Jun-Aug	Jun-Aug
Elevation:	70-2750 (230-9025)
General Habitats:	Chaparral, Lower montane coniferous forest, Upper montane coniferous forest
Microhabitat:	Serpentine (often)
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.3
Global Rank:	G4T4
State Rank:	S3S4
State List:	None
Fed List:	None
Other Status:
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	0
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	0

Location


California Endemic: False
California Counties and Islands: Name (Code)
Humboldt (HUM), Siskiyou (SIS), Trinity (TRI)
Quads: Name (Quad Code)
Parker Mtn. (4212213), Black Lassic (4012335), Blocksburg (4012336), Callahan (4112237), Carrville (4112216), Copco (4112283), English Peak (4112342), Gazelle Mtn. (4112246), Grouse Mtn. (4012376), Hoopa (4112316), Kangaroo Mtn. (4112382), Lord-ellis Summit (4012387), Maple Creek (4012377), Owl Creek (4012358), Sawyers Bar (4112332), Scotia (4012441), Seven Lakes Basin (4112224), Tish Tang Point (4112315), Whisky Bill Peak (4112215)

Threat List Data from the CNDDB


Threat List Total:	0
EOs with Threat Listed:	Total EOs	% of EOs
	0	0 %

Notes



Possibly threatened by logging and related activities, but often abundant in disturbed areas. See Novon 12(2):253-261 (2002) for revised nomenclature.
Threats:

Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 29 April 2025].