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Chambers' bladderpod

Columbia bladderpod, Douglas' bladderpod

Habit Plants cespitose, silvery; caudices present.
Stems

arising laterally, 5–15 cm.

Basal leaves

obovate to orbicular, 3–6 × 1–2 cm;

margins entire or dentate.

Cauline leaves

spatulate, 1–2 cm × 3–6 mm;

margins entire.

Inflorescences

fruiting pedicels divaricate, slightly sigmoid, 8–15 mm.

Flowers

sepals narrowly lanceolate, 5–8(9) mm;

petals narrowly oblanceolate, 9–12 mm, yellow;

claws undifferentiated;

ovules 4–12 per ovary;

styles (4)6–8 mm.

Fruits

didymous; terete, bases obtuse to subcordate;

tips notched, pubescent, retaining seeds after dehiscence;

valves keeled and 3-angled on back; flat-sided; bladdery, strongly inflated, 1–1.5 × ~1 cm; replums oblong, obtuse at tip, 4–6 × ~1 mm; narrower than fruits.

Seeds

not margined.

Trichomes

few-rayed, with umbos;

rays forked, slightly tuberculate.

2n

=8, 10, 16, 24.

Physaria chambersii

Physaria douglasii

Distribution
[WildflowerSearch map]
[BONAP county map]
[WildflowerSearch map]
[BONAP county map]
Discussion

Loose gravel, clay hillsides, sagebrush, pinyon-juniper communities, steep road banks. Flowering Apr–Jun. 500–1400 m. BR, BW, Owy. CA, NV; southeast to AZ. Native.

Source Flora of Oregon, volume 2, page 501
Ihsan Al-Shehbaz
Sibling taxa
P. douglasii, P. geyeri, P. kingii, P. occidentalis, P. oregona
P. chambersii, P. geyeri, P. kingii, P. occidentalis, P. oregona
Subordinate taxa
P. douglasii ssp. douglasii
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