Part 2, 1920] FABACEAE: PSORALEAE 77 



10 mm. long; rachis glabrous, margined, sparingly glandular-dotted; stipels represented by 

 small glands; leaflets 3, rarely 5, linear-filiform, 3-5 cm. long; spikes dense, short, 1 cm. long 

 or less, 7 mm. thick; bracts deciduous, ovate, acute, ciliate, scarcely equaling the calyces; 

 calyx-tube turbinate, silky, nearly 2 mm. long; lobes subulate, about equaling the tube; corolla 

 purple or rose; blade of the banner broadly deltoid-ovate, nearly 2 mm. long, equaling the 

 claw; blades of the wings and keel-petals 2 mm. long, the claws 1 mm. long; pod silky-pilose, 

 densely so above. 



Type locality: Copper Mines [Santa Rita del Cobre], New Mexico. 

 Distribution: New Mexico, Arizona, and Chihuahua. 



61. Parosela brachystachys (A. Gray) A. Heller; Rose, Contr. 

 U. S. Nat. Herb. 10: 105. 1906. 



Dalea brachystachys A. Gray, PI. Wright. 2: 39. 1853. 



A slender annual; stem 1-3 dm. high, glabrous, much branched, sparingly glandular- 

 dotted; leaves 1-3 cm. long; stipules minute, subulate; petiole 4-8 mm. long; rachis glabrous, 

 margined, sparingly glandular-dotted; stipels represented by glands; leaflets 5-11, cuneate- 

 oblong to linear, glabrous, glandular-dotted and glaucous beneath, 5-15 mm. long; peduncles 

 terminating the branches or opposite the leaves, 1-6 cm. long; spikes subglobose; bracts ovate, 

 acute or acuminate, green to dark-brown, conspicuously glandular-dotted, glabrous, tardily 

 deciduous; calyx-tube turbinate, 10-ribbed, silky-hirsute, 2 mm. long; lobes with a deltoid base, 

 subulate-filiform, longer than the tube; corolla yellowish, tinged with rose; blade of the banner 

 subcordate, 2 mm. long and fully as broad; wings and keel-petals inserted far below the middle 

 of the staminal tube; blades of the wings 2-2.5 mm. long, those of the keel-petals broader and 

 with a smaller basal lobe, 3 mm. long, the claws of both nearly 2 mm. long; pod silky-villous. 



Type locality: Between San Pedro and Sonorita, Sonora. 

 Distribution: New Mexico and Arizona to Sonora and San Luis Potosi. 



62. Parosela Lemmoni (Parry) A. Heller, Cat. N. Am. PI. 

 ed. 2. 6. 1900. 



Dalea Lemmoni Parry; A. Gray, Proc. Am. Acad. 17: 200. 1882. 



A slender annual or perennial, branched at the base; stem 1-3 dm. high, branched, gla- 

 rous; leaves 1-3 cm. long; stipules minute, subulate; petiole 1-3 mm. long; rachis glabrous, 

 conspicuously glandular-dotted, margined; leaflets 5-11, linear to oblong-cuneate, 4—10 mm. 

 long, acutish to retuse, glabrous on both sides, conspicuously glandular-dotted beneath; 

 peduncles terminal or opposite the leaves, 2-6 cm. long; spikes globose or ovoid, about 1 cm. 

 long; bracts lanceolate, acuminate, conspicuously glandular-dotted and glabrous on the back, 

 ciliate on the margins; calyx-tube turbinate, 10-ribbed, silky-hirsute, 2 mm. long; lobes subu- 

 late-attenuate, longer than the tube; corolla rose-colored; blade of the banner deltoid-cordate, 

 2 mm. long, the claw 3 mm. long; blades of the wings obliquely elliptic or obovate, with a 

 rounded basal lobe, 3-3.5 mm. long, those of the keel-petals broadly obovate, with a smaller 

 basal lobe, 3.5-4 mm. long, the claws of both 2 mm. long; pod silky-villous. 



Type locality: Near Fort Bowie, Apache Pass. Arizona. 

 Distribution: Arizona and Chihuahua to Puebla. 



63. Parosela costaricana Rydberg, sp. nov. 



Dalea annua alopecuroides Kuntze, Rev. Gen. 178, in part. 1891. 



A stout annual; stem 3-5 dm. high, much branched, grooved, conspicuously glandular- 

 dotted; leaves spreading, 3-8 cm. long; stipules subulate; rachis glabrous, glandular-dotted; 

 stipels conic, gland-like; leaflets 15-49, oblong, obtuse, 4—8 mm. long, glabrous on both sides, 

 conspicuously glandular-dotted beneath; peduncles terminating the branches, 2-10 cm. long; 

 spikes dense, cylindric, 2-6 cm. long, 8-9 mm. thick; bracts ovate, acuminate, scartous on the 

 margins below, ciliate, the back and tip green; corolla white; blade of the banner rounded 

 obovate, with a pair of acutish basal lobes, 2 mm. long, the claw 1.5 mm. long; blades of the 



