Burke: Calochortus lyallii vs. Calochortus nuttallii

	Calochortus lyallii	Calochortus nuttallii
	Lyall's mariposa-lily
Habit	Perennial herb from a deep-seated bulb, the stem erect, 1-5 dm. tall.
Leaves	Basal leaf flat, 1-2 dm. long and 2-20 mm. broad, not exceeding the inflorescence; a single bract-like cauline leaf about mid-stem.
Flowers	Umbel 1-4 flowered; flowers white or purplish tinged, with a purple crescent on each petal above the gland and a similar spot on each sepal; pedicels slender, erect or spreading; sepals 3, about equal to the petals, lanceolate, glabrous; petals 3, ovate to lanceolate, pointed, abruptly contracted at the base to a short claw, conspicuously fringed with long, slender hairs; gland transverse, arched upward, bordered above with a fringed membrane and below with a narrower membrane, the enclosed surface covered with thick processes; stamens 6, style short, stigma trifid, persistent.
Fruits	Capsule elliptic, 3-winged, erect.

	Calochortus lyallii	Calochortus nuttallii
Flowering time	May-July
Habitat	Dry, open coniferous forests at moderate to mid-elevations in the mountains.
Distribution	Occurring east of the Cascades crest in central Washington; British Columbia south along the east slope of the Cascades to south-central Washington. [WildflowerSearch map] [BONAP county map]	[WildflowerSearch map] [BONAP county map]
Origin	Native
Conservation status	Not of concern
Sibling taxa	C. apiculatus, C. elegans, C. eurycarpus, C. longebarbatus, C. macrocarpus, C. nitidus, C. subalpinus	C. apiculatus, C. elegans, C. eurycarpus, C. longebarbatus, C. lyallii, C. macrocarpus, C. nitidus, C. subalpinus
Web links	Local floras: BC, WA Local Web sites: 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: OR Local Web sites: 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

Calochortus lyallii

Calochortus nuttallii

Lyall's mariposa-lily

Habit

Perennial herb from a deep-seated bulb, the stem erect, 1-5 dm. tall.

Leaves

Basal leaf flat, 1-2 dm. long and 2-20 mm. broad, not exceeding the inflorescence; a single bract-like cauline leaf about mid-stem.

Flowers

Umbel 1-4 flowered;

flowers white or purplish tinged, with a purple crescent on each petal above the gland and a similar spot on each sepal;

pedicels slender, erect or spreading;

sepals 3, about equal to the petals, lanceolate, glabrous;

petals 3, ovate to lanceolate, pointed, abruptly contracted at the base to a short claw, conspicuously fringed with long, slender hairs;

gland transverse, arched upward, bordered above with a fringed membrane and below with a narrower membrane, the enclosed surface covered with thick processes;

stamens 6, style short, stigma trifid, persistent.

Fruits

Capsule elliptic, 3-winged, erect.