Burke: Cypripedium californicum vs. Cypripedium fasciculatum

	Cypripedium californicum	Cypripedium fasciculatum
		clustered lady's-slipper
Habit		Perennial herbs 0.5-2 dm. tall, the stem with long, soft hairs and a sheathing bract near the ground.
Leaves		A pair of leaves about midway on the stem, sessile, broadly-elliptic to elliptic-oval, 4-8 cm. broad, rounded; 1-2 lanceolate bracts near the inflorescence.
Flowers		Flowers terminal, 2-4 in a tight cluster, subtended by conspicuous, greenish bracts; sepals 3, the lower pair fused completely below the lip, lanceolate-acuminate, 12-25 mm. long, greenish-brown or greenish-purple, usually mottled; the 2 small petals similar to the sepals, spreading, the third petal (lip) pouch-like, greenish-yellow with brownish-purple margins; fertile stamens 2, a third stamen sterile and petal-like, 2.5-3 mm. long.
Fruits		Capsule.

	Cypripedium californicum	Cypripedium fasciculatum
Flowering time		April-July
Habitat		Moist to rather dry and rocky, open coniferous forests.
Distribution	[WildflowerSearch map] [BONAP county map]	Occurring east of the Cascades crest in Washington; British Columbia to Santa Cruz County, California, east to Montana and Colorado. [WildflowerSearch map] [BONAP county map]
Origin		Native
Conservation status		Not of concern
Sibling taxa	C. ×columbianum, C. fasciculatum, C. montanum, C. parviflorum	C. ×columbianum, C. montanum, C. parviflorum
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, WA 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

Cypripedium californicum

Cypripedium fasciculatum

clustered lady's-slipper

Habit

Perennial herbs 0.5-2 dm. tall, the stem with long, soft hairs and a sheathing bract near the ground.

Leaves

A pair of leaves about midway on the stem, sessile, broadly-elliptic to elliptic-oval, 4-8 cm. broad, rounded; 1-2 lanceolate bracts near the inflorescence.

Flowers

Flowers terminal, 2-4 in a tight cluster, subtended by conspicuous, greenish bracts;

sepals 3, the lower pair fused completely below the lip, lanceolate-acuminate, 12-25 mm. long, greenish-brown or greenish-purple, usually mottled; the 2 small petals similar to the sepals, spreading, the third petal (lip) pouch-like, greenish-yellow with brownish-purple margins;

fertile stamens 2, a third stamen sterile and petal-like, 2.5-3 mm. long.

Fruits

Capsule.