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FNA | Family List | FNA Vol. 7 | Brassicaceae | Physaria

73. Physaria pycnantha Grady & O’Kane, Novon. 17: 188, fig. 5. 2007.

Mountain-view bladderpod

Perennials; caudex branched, (densely cespitose and forming hemispheric mounds); densely pubescent, trichomes 5-rayed, rays bifurcate near base, fused at base, (strongly tuberculate throughout). Stems few to several from base, erect, (usually exceeding basal leaves), 0.3-0.7 dm. Basal leaves: blade linear-spatulate, 1.5-4 cm, (base narrowed gradually to petiole), margins entire. Cauline leaves: blade spatulate, similar to basal. Racemes crowded in distal 1/3, (4-10-flowered). Fruiting pedicels (loosely to strongly sigmoid), 6-10 mm. Flowers: sepals (pale yellow), oblong to elliptic, 3-4 mm, (median pair usually thickened apically, cucullate); petals (sometimes with slight tinge of orange basally), lingulate, 4-6 mm. Fruits ellipsoid, slightly inflated (somewhat latiseptate), 4-5 mm, (apex acute); valves pubescent, trichomes erect, appearing slightly shaggy; ovules 4-8 per ovary; styles 2.5-3 mm, (shorter than mature fruits). Seeds ± flattened, convex on outer side.

Flowering late May-Jun(-Jul). Dry, windswept knolls of limestone gravel, with other cushion-forming plants; 1600-2300 m; Idaho, Mont.

Physaria pycnantha is morphologically similar to 56. P. nelsonii.


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