Marina unifoliata (Robinson & Greenm.) Barneby

Parosela unifoliata (Rob. & Greenm.) Rose, Contr. U. S. Nat Herb. 8:303. 1905.
Dalea unifoliata Rob. & Greenm. Proc. Am. Acad. 29: 383. 1894.
A slender annual; stem glabrous, diffusely branched from near the base, 2-4 dm. high, minutely glandular-punctate; leaves unifoliolate; stipules minute, subulate; petioles 6-10 mm. long, glabrous, with a pair of glands near the base of the leaflet; leaflet broadly ovate to orbicular, 0.5-2 cm. broad, truncate or subcordate at the base, rounded at the apex, glandularcrenate on the margins, minutely glandular-punctate, thin, glabrous; racemes terminating the branches, lax, 5-10 cm. long; bracts lanceolate, 2-3 mm. long, ciliate, acuminate, deciduous; pedicels fully 1 mm. long, with a gland at the apex; calyx distinctly articulate to the pedicel, the tube turbinate, 3.5-4 mm. long, 10-costate; lobes lanceolate, acute, as long as the tube; banner usually white, sometimes purplish, the blade suborbicular, about 2 mm. long, the claw rather short; wings and keelpetals obliquely broadly obovate, 4 mm. long, short-clawed, violet; pod included'
Type locality: Barranca of Tequila. Jalisco. Distribution: Known only from the type locality.