UW Burke Herbarium species comparison

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Physaria alpestris

Physaria oregona
Physaria alpestris

alpine twinpod, Washington twinpod

Oregon twinpod
Habit Perennial herbs from a thick, branched crown, the numerous, erect to decumbent stems 5-15 cm. long; herbage silvery with tiny, appressed stellate hairs.
Leaves

Basal leaves numerous, 4-8 cm. long, the blade entire, oblanceolate or obovate, tapered to a slender petiole at least as long;

cauline leaves alternate, reduced, oblanceolate.

Flowers

Inflorescence of short, crowded, bractless racemes; pedicles ascending, 10-15 mm. long;

sepals 4, the outer pair saccate at the base;

petals 4, yellow, spatulate, 8-14 mm. long;

stamens 6;

style 5-7 mm. long.

Fruits

Silicles strongly inflated, developed in pairs, 14-18 mm. long and broad, shallowly cordate at the base, the apical sinus open, 2-3 mm. deep.

Physaria alpestris

Physaria oregona
Flowering time April-July April-June
Habitat Open rocky areas, scree and talus slopes, middle to high elevations in the mountains. Dry areas including rocky slopes, gravel banks, and stream shores.
Distribution
Occurring east of the Cascades crest in Washington, where endemic to Chelan, Kittitas and Yakima counties.
[WildflowerSearch map]
[BONAP county map]
Occurring east of the Cascades crest in southeastern Washington; Washington to Oregon, east to Idaho.
[WildflowerSearch map]
[BONAP county map]
Origin Native Native
Conservation status Not of concern Not of concern
Sibling taxa
P. didymocarpa, P. douglasii, P. geyeri, P. occidentalis, P. oregona
P. alpestris, P. didymocarpa, P. douglasii, P. geyeri, P. occidentalis
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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Choose a data source: Flora of North America, OregonFlora, UW Burke Herbarium

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