OregonFlora: Lilium washingtonianum vs. Lilium washingtonianum ssp. purpurascens

	Lilium washingtonianum	Lilium washingtonianum ssp. purpurascens
	Cascade lily	Cascade lily, Washington lily
Habit		Plants to 2.6 m, often glaucous; bulbs ascending to erect most scales indistinctly 2(3)-segmented, longest 3.3–12 cm.
Leaves		in 1–9(14) whorls; horizontal to nearly clasping stem, generally oblanceolate, 3–13 cm; margin wavy or not.
Inflorescences		flowers 1–15(33), nodding to ascending.
Flowers		slightly bilateral, roughly trumpet-shaped, strongly fragrant; perianth segments (5.6)6.2– 9.5(10.5)cm, white, becoming deep pink or lavender; magenta spots minute; inner segments wider and strongly oblanceolate; distal 33% portion recurved; outer surface generally purplish (often faintly so); stamens slightly longer in length than perianth; filaments roughly parallel; anthers 8–15 mm, cream, becoming yellow; pollen pale (bright) yellow; pistil 7.5–10.4 cm.
Fruits		2.7–5.8 cm, generally ribbed.
2n		=24.

	Lilium washingtonianum	Lilium washingtonianum ssp. purpurascens
Distribution	[WildflowerSearch map] [BONAP county map]	[BONAP county map]
Discussion	[Species with one variety or subspecies in Oregon.]	Douglas-fir forests, roadsides, burned clearcuts. Flowering Jun–Aug. 50–2000m. Casc, ECas, Sisk, WV. CA. Native. The Cascade lily is pollinated by sphinx and doubtless other moths in the family Sphingidae. Nectar secretion and scent production are timed to their arrival at dusk. The open nature of the flower and copious nectar secretion attract many diurnal visitors including a variety of butterflies, bees, and flies, but these insects are not significant pollinators.
Source	Flora of Oregon, volume 1	Flora of Oregon, volume 1, page 307 Mark Skinner
Sibling taxa	L. bolanderi, L. columbianum, L. columbianum x Lilium pardalinum, L. kelloggii, L. occidentale, L. pardalinum	L. washingtonianum ssp. washingtonianum
Subordinate taxa	L. washingtonianum ssp. purpurascens, L. washingtonianum ssp. washingtonianum
Web links	Local floras: CA, OR Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria, Turner Photog. WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: CA, OR Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Lilium washingtonianum ssp. purpurascens

Cascade lily

Cascade lily, Washington lily

Habit

Plants to 2.6 m, often glaucous; bulbs ascending to erect most scales indistinctly 2(3)-segmented, longest 3.3–12 cm.

Leaves

in 1–9(14) whorls; horizontal to nearly clasping stem, generally oblanceolate, 3–13 cm;

margin wavy or not.

Inflorescences

flowers 1–15(33), nodding to ascending.

Flowers

slightly bilateral, roughly trumpet-shaped, strongly fragrant;

perianth segments (5.6)6.2– 9.5(10.5)cm, white, becoming deep pink or lavender; magenta spots minute;

inner segments wider and strongly oblanceolate;

distal 33% portion recurved;

outer surface generally purplish (often faintly so);

stamens slightly longer in length than perianth;

filaments roughly parallel;

anthers 8–15 mm, cream, becoming yellow;

pollen pale (bright) yellow;

pistil 7.5–10.4 cm.

Fruits

2.7–5.8 cm, generally ribbed.

=24.

Lilium washingtonianum ssp. purpurascens

Distribution

[WildflowerSearch map]

[BONAP county map]

Discussion

[Species with one variety or subspecies in Oregon.]

Douglas-fir forests, roadsides, burned clearcuts. Flowering Jun–Aug. 50–2000m. Casc, ECas, Sisk, WV. CA. Native.

The Cascade lily is pollinated by sphinx and doubtless other moths in the family Sphingidae. Nectar secretion and scent production are timed to their arrival at dusk. The open nature of the flower and copious nectar secretion attract many diurnal visitors including a variety of butterflies, bees, and flies, but these insects are not significant pollinators.

Source

Flora of Oregon, volume 1

Flora of Oregon, volume 1, page 307
Mark Skinner

Sibling taxa