Psoralea reverchonii S. Watson

Pediomelum reverchoni (S. Wats.) Rydberg
Psoralea Reverchoni S. Wats. Proc. Am. Acad. 21: 447. 1886.
A perennial, with a tuberous root; stem 5-8 dm. high, strigose-canescent, branched; leaves digitately 3-5-foliolate; stipules subulate, 3 mm. long; petioles 3-6 mm. long; leaflets 1.5-4 cm. long, 5-8 mm. broad, elliptic to linear-oblong, acute at each end, copiously and minutely glandular-dotted, glabrate above, sparingly strigose beneath; peduncles 1-2 cm. long; spikes short, dense; bracts 1-1.5 cm. long, broadly ovate, caudate-cuspidate, strigose, glandularpunctate; flowers subsessile; calyx 1-1.5 cm. long, hirsute and ciliate; lobes lance-linear, acuminate, the upper four about 8 mm. long, the lowest one 1 cm. long or more; corolla about 1.5 cm. long; banner oblanceolate, slightly retuse at the apex; wings with an ovate basal lobe.
Type locality: Hood County, Texas. Distribution: Texas and Oklahoma.