Burke: Lewisiopsis tweedyi vs. Cistanthe umbellata

	Lewisiopsis tweedyi	Cistanthe umbellata
	Tweedy's lewisia
Habit		Annual to perennial, glabrous, fleshy herbs from a much-branched, thickened crown, the branches often numerous, spreading, forming mats up to 15 cm. broad
Leaves		Leaves all basal, glabrous, tufted, forming rosettes, obovate-spatulate to oblanceolate, broadly petiolate, 1.5-5 cm. long.
Flowers		Flowers in heads up to 4 cm. broad on peduncles 1-10 cm. tall, these leafless or with 1-several very small bract-like leaves; sepals 2, persistent, white- to pinkish-bordered, 4-10 mm. broad; petals 4, oblong, about equal to the sepals at flowering, pinkish to white, quickly withering; stamens 3, opposite the largest petals; style 1.
Fruits		Capsule flattened.

	Lewisiopsis tweedyi	Cistanthe umbellata
Flowering time	April-June	June-August
Habitat	Rock outcroppings and dry slopes of open ponderosa pine/Douglas fir forests.	Ponderosa pine forest openings to alpine slopes.
Distribution	Occurring east of the Cascades crest in Kittitas, Chelan, and Okanogan counties in Washington; endemic to southern British Columbia and north-central Washington. [WildflowerSearch map] [BONAP county map]	Occurring on both sides of the Cascades crest in Washington; British Columbia to Baja California, east to Montana, Wyoming and Utah. [WildflowerSearch map]
Origin	Native	Native
Conservation status	Not of concern	Not of concern
Web links	Local floras: BC, WA 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	Local floras: BC, CA, OR, WA 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

Lewisiopsis tweedyi

Cistanthe umbellata

Tweedy's lewisia

Habit

Annual to perennial, glabrous, fleshy herbs from a much-branched, thickened crown, the branches often numerous, spreading, forming mats up to 15 cm. broad

Leaves

Leaves all basal, glabrous, tufted, forming rosettes, obovate-spatulate to oblanceolate, broadly petiolate, 1.5-5 cm. long.

Flowers

Flowers in heads up to 4 cm. broad on peduncles 1-10 cm. tall, these leafless or with 1-several very small bract-like leaves;

sepals 2, persistent, white- to pinkish-bordered, 4-10 mm. broad;

petals 4, oblong, about equal to the sepals at flowering, pinkish to white, quickly withering;

stamens 3, opposite the largest petals;

style 1.

Fruits

Capsule flattened.

Lewisiopsis tweedyi

Cistanthe umbellata

Flowering time

April-June

June-August

Habitat

Rock outcroppings and dry slopes of open ponderosa pine/Douglas fir forests.

Ponderosa pine forest openings to alpine slopes.

Distribution

Occurring east of the Cascades crest in Kittitas, Chelan, and Okanogan counties in Washington; endemic to southern British Columbia and north-central Washington.

[WildflowerSearch map]

[BONAP county map]