Dalea pectinata Kunth

Parosela pectinata (Kunth) Rose, Contr. U. S. Nat Herb. 10: 104. 1906.
Dalea pectinata Kunth, Mimoses 169. 1819.
A herbaceous perennial, with a woody thick base; stems several, 5-10 dm. high, branched above, glabrous, striate; leaves spreading, 3-5 cm. long; stipules subulate-setaceous, about
2 mm. long; petiole 1-3 mm. long; rachis slightlywinged, glabrous, glandular-dotted on the wings; stipels gland-like; leaflets 41-65, linear, involute, 2-4 mm. long, glabrous, glandulardotted; peduncles axillary or terminating axillary branches, 2-8 cm. long, glabrous except in and just below the spike; spikes dense, 2-3 cm. long, about 1 cm. thick; bracts lanceolate, acuminate, caducous, silky-villous; calyx-tube turbinate, 2 mm. long, rather prominently 10ribbed, silky-villous; lobes lanceolate, acuminate, nearly equaling the tube; corolla blue or bluish-purple; blade of the banner cordate, 3 mm. long, about equaling the claw; blades of the wings 4.5 mm. long, those of the keel-petals with a less distinct basal lobe, the claws about
3 mm. long; pod broadly obliquely obovate, with a minute beak, shortvillous.
Type locality: Villapando, Mexico.
Distribution: Durango to Jalisco and San Luis Potosi.