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Physaria oregona
S. Watson
Family:
Brassicaceae
Oregon Bladderpod
FNA
Resources
Steve L. O´Kane Jr. in Flora of North America (vol. 7)
Perennials;
caudex simple, (cespitose); (silvery) pubescent throughout, trichomes (stalked), few-rayed, rays furcate or imperfectly so, (tuberculate throughout).
Stems
several from base, erect or somewhat decumbent, (unbranched), 1-3.5 dm.
Basal leaves:
(petiole slender, usually incised or with broad teeth along petiole); blade obovate, 4-6 cm, margins entire.
Cauline leaves:
blade oblanceolate or broader, 1.5-2.5 cm, margins entire or sparsely dentate, (apex acute).
Racemes
somewhat loose, (5-15 cm).
Fruiting pedicels
(spreading or ascending, curved, fruits not pendent), 10-20 mm.
Flowers:
sepals oblong, 5-7 mm; petals (lemon yellow), spatulate, 9-12 mm.
Fruits
didymous, obreniform, moderately inflated, angustispetate, (8-)10-12(-15) × 10-14(-16) mm, (papery, not keeled, basal sinus absent, apical sinus broad and open); valves (retaining seeds after dehiscence, rounded or irregular), loosely pubescent, trichomes spreading; replum broadly lanceolate, as wide as or wider than fruit, apex acute; ovules 8 per ovary; style 1-2 mm.
Seeds
flattened.
2
n
= 8.
Flowering Apr-Jun. Gravelly banks, stream shores, rocky slopes, dry hillsides, serpentine soils; 900-1900 m; Idaho, Oreg., Wash.
Open Interactive Map
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This project was made possible in part by the Institute of Museum and Library Services [MG-70-19-0057-19].
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