Part 2, 1920] FABACEAE: PSORALEAE S7 



obtuse, 2-3 mm. long, glabrous on both sides, very glandular-dotted beneath; peduncles 

 terminating the branches, 3-6 dm. long; spikes sub-capitate; bracts obovate or oval, short- 

 acuminate or apiculate, shorter than the calyx, persistent; calyx-tube turbinate-campanulate, 

 2.5 mm. long, brown-silky, not strongly ribbed; lobes deltoid, acute, two-thirds as long as the 

 tube; banner ochroleucous, the blade rounded-cordate, 3 mm. long, longer than the claw; 

 wings and keel-petals purple, with the base ochroleucous, inserted far below the middle of the 

 staminal tube, the blades of the wings obliquely elliptic, 4 mm. long, those of the keel-petals 

 broader, obovate, with a smaller rounded basal lobe, 4.5 mm. long, the claws of both 1.5 mm. 

 long; pod densely brown-pubescent. 



Type locality: San Luis Potosi. 



Distribution: San Luis Potosf. 



90. Parosela trochilina (Brand.) Rose, Contr. U. S. Nat. 

 Herb. 10: 104. 1906. 



Dalea trochilina Brand. Proc. Calif. Acad. II. 3: 200. 1892. 



A shrub, 1-1.5 m. high, branched above, glabrous, copiously glandular-tuberculate; 

 leaves numerous, 1-2 cm. long; stipules minute, subulate; petiole 3-5 mm. long; rachis glabrous, 

 glandular-dotted; stipels gland-like; leaflets 7-15, obovate, 3-5 mm. long, rounded at the apex, 

 glabrous on both sides, glandular-dotted beneath ; peduncles terminating the branches, 1-3 cm. 

 long; spikes dense and short, head-like, 1-2 cm. long; bracts firm, broadly obovate, abruptly 

 acuminate, almost black, persistent, equaling the calyx; calyx-tube turbinate-campanulate, 

 2.5 mm. long, brown-silky, not strongly ribbed; lobes deltoid, acute, fully half as long as the 

 tube; banner ochroleucous or whitish, the blade rounded-cordate, 3 mm. long, fully equaling 

 the claw; wings and keel-petals purple with the base ochroleucous, inserted far below the middle 

 of the staminal tube, the blades of the wings obliquely elliptic, 4 mm. long, those of the keel- 

 petals broader, with a smaller basal lobe, 5 mm. long, the claws 1.5 mm. long; pod pubescent. 



Type locality: La Chuparosa. Lower California. 



Distribution: Cape region of Lower California. 



91. Parosela minutifolia Rydberg, sp. nov. 



Dalea polycephala Benth.; Hemsl. Biol. Centr. Am. Bot. 1: 244, in part; hyponym. 1S80. 



A shrub, about 5 dm. high; branches glabrous, densely glandular-tubercled ; leaves rarely 

 more than 0.5 cm. long; stipules subulate, 1 mm. long or less; rachis glabrous; stipels conic, 

 gland-like; leaflets 7-9, fleshy, clavate, somewhat involute, glabrous, conspicuously glandular- 

 dotted beneath, 1-2 mm. long, crowded; spikes subsessile, terminal, 1-1.5 cm. long; bracts 

 lanceolate, densely silky-pilose, acute, equaling the calyx; calyx- tube campanulate, densely 

 silky-pilose, 2 mm. long; lobes lance-subulate, 1 mm. long, densely silky; blade of the banner 

 rounded-cordate, with a conspicuous gland near the apex and several small ones near the base, 

 2.5 mm. long, the claw 1.5 mm. long; the other petals rose-purple, the blades 4-5 mm. long, 

 the claws 1 mm. long; pod densely silky- villous. 



Type collected at Pachuca, Hidalgo, May, 1905, Purpus 1145 (herb. N. Y. Bot. Gard.). 



Distribution: Veracruz to Zacatecas and Oaxaca. 



92. Parosela naviculifolia (Hemsl.) Rose, Contr. U. S. Nat. 

 Herb. 10: 104. 1906. 



Dalea naviculifolia Hemsl. Diag. PI. Nov. 7. 1878. 



A diffusely branched shrub, prostrate or spreading, 3-5 dm. high; branches finely puberu- 

 lent, conspicuously glandular-tubercled; leaves numerous, 1-2 cm. long; stipules subulate, 

 1-2 mm. long; rachis puberulent; stipels gland-like; leaflets 11-21, oblong, 2-3 mm. long, 

 concave, puberulent above, glandular-dotted beneath, obtuse; peduncles terminating the 

 branches, about 1 cm. long; spikes dense, 1-3 cm. long, about 8 mm. thick; bracts lance-ovate, 

 acuminate, pubescent, deciduous; calyx brown, puberulent; tube campanulate, not strongly 

 ribbed, puberulent and conspicuously glandular, 2 mm. long; lobes lance-ovate, acute, half as 

 long as the tube, the lowest the longest ; banner white or ochroleucous, the blade round-cordate, 

 emarginate, 3 mm. long and broad; wings and keel-petals purple, inserted just below the middle 



