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6b. Physaria arenosa (Richardson) O’Kane & Al-Shehbaz subsp. argillosa (Rollins & E. A. Shaw) O’Kane & Al-Shehbaz, Novon. 12: 321. 2002.
Secund or sidesaddle bladderpod
Lesquerella arenosa (Richardson) Rydberg var. argillosa Rollins & E. A. Shaw, Gen. Lesquerella, 178. 1973; Physaria arenosa var. argillosa (Rollins & E. A. Shaw) B. L. Turner
Perennials; long-lived. Fruit valves: trichomes closely appressed. 2n = 26, 30.
Flowering May-Jun. Open, barren sites of grasslands and badlands with clayey or sandy-clay soils derived from limestone; 700-1600 m; Colo., Nebr., S.Dak., Wyo.
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