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

22b. Lepidium lasiocarpum Nuttall subsp. wrightii (A. Gray) Thellung, Mitt. Bot. Mus. Univ. Z├╝rich. 28: 266. 1906.

Lepidium wrightii A. Gray, Smithsonian Contr. Knowl. 5(6): 15. 1853; L. lasiocarpum var. rotundum C. L. Hitchcock; L. lasiocarpum var. wrightii (A. Gray) C. L. Hitchcock; L. nelsonii L. O. Williams

Fruiting pedicels (0.4-)0.5-0.7 mm wide, often more than 3 times as wide as thick. Nectar glands subulate, 0.3-0.5 mm. Fruit valves hispid, trichomes pustular-based. 2n = 32.

Flowering Feb-May. Roadsides, rocky draws, dry washes, loose sand, stony or gravelly areas, clay flats; 200-1100 m; Ariz., N.Mex., Tex.; Mexico (Coahuila, Tamaulipas).

I. A. Al-Shehbaz (1986b) reported subsp. wrightii from Louisiana, but we have seen no additional material from that state, where it was likely introduced.


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