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Calochortus lyallii

Lyall's mariposa-lily

Baker's mariposa-lily, pointed mariposa-lily, three-spot 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 1-3 dm. tall, stout and erect.
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.

Basal leaf flat, 1-3 dm. long and 5-15 mm. wide, tapering at both ends.

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.

Umbel 1- to 5-flowered, the flowers yellowish-white, sometimes penciled with purple, erect or spreading on stout pedicles which become deflexed in fruit;

sepals 3, shorter than the petals, oblong-lanceolate, pointed, glabrous;

petals obovate to oblanceolate, clawed, fringed laterally and bearded on the lower half above the claw;

gland small, depressed, circular in outline, bordered below with a dark, fringed membrane;

ovary 3-winged, with a short style and trifid stigma.

Fruits

Capsule elliptic, 3-winged, erect.

Fruit elliptic, acute, 3-winged, nodding.

Calochortus lyallii

Calochortus apiculatus

Flowering time May-July June-July
Habitat Dry, open coniferous forests at moderate to mid-elevations in the mountains. Dry meadows to sparse or deep woodlands.
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]
Occurring east of the Cascades crest in the northeast counties of Washington; southeastern British Columbia to northeastern Washington, east to southeastern Alberta, northern Idaho, and western Montana.
[WildflowerSearch map]
[BONAP county map]
Origin Native Native
Conservation status Not of concern Not of concern
Sibling taxa
C. apiculatus, C. elegans, C. eurycarpus, C. longebarbatus, C. macrocarpus, C. nitidus, C. subalpinus
C. elegans, C. eurycarpus, C. longebarbatus, C. lyallii, C. macrocarpus, C. nitidus, C. subalpinus
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