58 NORTH AMERICAN FLORA [Volume 24 



22. Parosela minutiflora Rose, Contr. U. S. Nat. Herb. 8: 306. 

 1905. 



A delicate annual; stem diffusely branched, glabrous, purplish, minutely glandular-punc- 

 tate, 2-4 dm. high; leaves 1-2 cm. long; stipules subulate, glandular-cilia te at the base; petioles 

 1-3 mm. long; rachis glabrous, conspicuously wing-margined; leaflets 13-29, oblong or linear- 

 oblong, 3-7 mm. long, truncate or retuse at the apex, glabrous on both sides, somewhat crenu- 

 late, glandular along the margins and sparingly so on the lower surface; stipels gland-like; 

 peduncles terminating the branches, 1 cm. long; racemes lax, 2-4-flowered; bracts glabrous, 

 obovate, short-acuminate, caducous; calyx-tube broadly turbinate, strongly 10-ribbed, 1.5 

 mm. long; lobes ovate, acute, the lowest slightly longer, all shorter than the tube; corolla pur- 

 ple; blade of the banner suborbicular, sinuate, 1.5 mm. long, the claw 1 mm. long; wings and 

 keel-petals inserted near the middle of the staminal tube, the blades broadly obovate, slightly 

 lobed at the base, 2.5-3 mm. long; pod glabrous, glandular-dotted. 



Type locality: Yautepec, Morelos. 

 Distribution: Known only from the type locality. 



23. Parosela nutans (Cav.) Rose, Contr. U. S. Nat. Herb. 8: 306. 



1905. 



Psoralea nutans Cav. Ic 3: 1. 1794. 



Dalea nutans Willd. Sp. PI. 3: 1339. 1803. 



Dalea meliloloides Moc & Sesse; DC. Prodr. 2: 246, as synonym. 1825. 



A perennial; stem erect, branched above, glabrous, purplish, minutely glandular-dotted; 

 leaves of the stem 4-6 cm. long; stipules subulate; petioles 3-5 mm. long; rachis more or less 

 winged, glabrous, somewhat glandular-dotted; leaflets 11-41, oblong, 5-10 mm. long, gla- 

 brous, glandular-dotted along the margins and minutely so on the lower surface; leaves of the 

 branches shorter and with fewer leaflets; peduncles terminating the branches, 1-2 cm. long; 

 racemes lax, 5- 1 0-flowered ; bracts ovate, glandular-dentate, glabrous, caducous; calyx-tube 

 broadly turbinate, strongly 10-ribbed, 2.5 mm. long; lobes acute, often slightly serrulate, shorter 

 than the tube, the upper 4 ovate, the lowest one lanceolate, slightly longer; corolla purple; 

 blade of the banner cordate, 2 mm. long, the claw 0.5 mm. long; blades of the wings 3 mm. long, 

 those of the keel-petals 4 mm. long, the claws of both 0.5 mm. long; pod broadly obovate, 

 glabrous, conspicuously glandular-dotted. 



Type locality: Mexico. 



Distribution: Sonora to Yucatan and Costa Rica. 



Illustration: Cav. Ic. pi. 201. 



24. Parosela gracillima (S. Wats.) Rose, Contr. U. S. Nat. Herb. 



8:305. 1905. 



Dalea gracillima S. Wats. Proc. Am. Acad. 22: 404. 18S7. 



A perennial, with a thick woody root, branched at the base; stems procumbent, glabrous 

 throughout, reddish, minutely glandular-dotted, slender, 3-5 dm. long; leaves delicate, spread- 

 ing, 1-2 cm. long; stipules minute, subulate; petioles 1-2 mm. long; rachis very slender, gla- 

 brous; stipels minute, subulate; leaflets 13-21, distinctly petioluled, oblanceolate, 1-4 mm. 

 long, glabrous, minutely glandular-dotted beneath and conspicuously so along the margins; 

 peduncles filiform, 1-4 cm. long; racemes 2-6-flowered, very short and head-like; calyx-tube 

 turbinate, strongly 10-ribbed, 2 mm. long; upper 4 calyx-lobes ovate, acute, the lowest one 

 lanceolate, slightly longer; blade of the banner cordate, yellowish, with brown spots, 2 mm. long; 

 wings and keel-petals purple, with yellowish bases, inserted far below the middle of the staminal 

 tube, the blades about 5 mm. long, the claws 2 mm. long; pod broadly and obliquely obovate, 

 glabrous, with a few large glands. 



Type locality: Guadalajara, Jalisco. 

 Distribution: Jalisco. 



