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

34. Physaria globosa (Desvaux) O’Kane & Al-Shehbaz, Novon. 12: 323. 2002.

Globe bladderpod

Vesicaria globosa Desvaux, J. Bot. Agric. 3: 184. 1815; Alyssum globosum (Desvaux) Kuntze; A. shortii (Torrey & A. Gray) Kuntze; Lesquerella globosa (Desvaux) S. Watson

Biennials or perennials; caudex branched, (± woody); densely pubescent, trichomes (sessile), 3-6-rayed, rays distinct and simple or furcate, (in 2 layers, lower layer umbonate, smooth to finely tuberculate, some often with a U-shaped notch). Stems several from base, erect, (arising among leaves of an elongated main axis), to 5 dm (± equal). Basal leaves (shortly petiolate); blade obovate to oblanceolate, (1.5-)2.5-5(-6) cm, margins entire, sinuate to shallowly toothed, or pinnatifid. Cauline leaves (sessile or shortly petiolate); blade oblanceolate to oblong, 1.3-3(-4) cm, (base cuneate), margins entire or repand to dentate. Racemes dense. Fruiting pedicels (usually spreading horizontally, straight), 7-14(-21) mm. Flowers: sepals elliptic or obovate, 2.6-4.1 mm, (median pair thickened apically, cucullate); petals (bright yellow), obovate, 3.5-6.5(-7.5) mm, (margins sinuate). Fruits (sessile or substipitate); globose, often slightly compressed apically, (1-)2-3 mm; valves sparsely pubescent, sometimes pubescent inside, trichomes spreading, 3-5-rayed; ovules 4 per ovary; style 2-3.5(-4) mm. Seeds flattened or plump, (often outer surface hemispherical, inner surface flattened, or both surfaces rounded). 2n = 14.

Flowering Mar-May. Open rocky areas, shale at cliff bases, open talus, ledges, open cedar glades; of conservation concern; 100-300 m; Ind., Ky., Tenn.

Physaria globosa is possibly introduced in Indiana. A report for Ohio was based on a collection by "Jones," but that specimen cannot be located.


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