Burke: Calochortus eurycarpus vs. Calochortus lyallii

	Calochortus eurycarpus	Calochortus lyallii
	big-pod mariposa lily, wide-fruited mariposa lily	Lyall's mariposa-lily
Habit	Perennial herb from a deep-seated bulb, the stem erect, 1-5 dm. tall.	Perennial herb from a deep-seated bulb, the stem erect, 1-5 dm. tall.
Leaves	Basal leaf flat, 1-3 dm. long and 5-25 mm. broad, exceeded by the inflorescence; single, bract-like cauline leaf about mid-stem.	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 1-5 flowered, the flowers creamy white to lavender, with a conspicuous red-purple blotch in the middle of each petal; sepals 3, broadly lanceolate, much shorter than the petals; petals 3, obovate, wedge-shaped; gland triangular, bordered below with a narrow, fringed membrane and above with a narrower membrane with rounded teeth, the enclosed surface densely covered with long, yellowish processes; stamens 6, in 2 series; style short, stigma trifid, persistent.	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 3-winged, elliptic-oblong, erect.	Capsule elliptic, 3-winged, erect.

	Calochortus eurycarpus	Calochortus lyallii
Flowering time	June-August	May-July
Habitat	Grasslands and open coniferous forests at moderate elevations.	Dry, open coniferous forests at moderate to mid-elevations in the mountains.
Distribution	Occurring east of the Cascades crest in southeastern Washington; southeastern Washington to eastern Oregon, east to Montana and Wyoming. [WildflowerSearch map] [BONAP county map]	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]
Origin	Native	Native
Conservation status	Review Group 1 in Washington (WANHP)	Not of concern
Sibling taxa	C. apiculatus, C. elegans, C. longebarbatus, C. lyallii, C. macrocarpus, C. nitidus, C. subalpinus	C. apiculatus, C. elegans, C. eurycarpus, C. longebarbatus, C. macrocarpus, C. nitidus, C. subalpinus
Web links	Local floras: OR, 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: 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

Calochortus eurycarpus

Calochortus lyallii

big-pod mariposa lily, wide-fruited mariposa lily

Lyall's mariposa-lily

Habit

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

Leaves

Basal leaf flat, 1-3 dm. long and 5-25 mm. broad, exceeded by the inflorescence; single, bract-like cauline leaf about mid-stem.

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 1-5 flowered, the flowers creamy white to lavender, with a conspicuous red-purple blotch in the middle of each petal;

sepals 3, broadly lanceolate, much shorter than the petals;

petals 3, obovate, wedge-shaped;

gland triangular, bordered below with a narrow, fringed membrane and above with a narrower membrane with rounded teeth, the enclosed surface densely covered with long, yellowish processes;

stamens 6, in 2 series;

style short, stigma trifid, persistent.

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 3-winged, elliptic-oblong, erect.

Capsule elliptic, 3-winged, erect.