Part 2, 1920] FABACEAE: PSORALEAE 135 



equaling the calyces; calyx 3.5 mm. long, long-pilose; lobes acute, about equaling the tube, 

 the lower three triangular-lanceolate, the upper two ovate; blade of banner broadly oblong, 

 rounded or retuse at the apex, truncate or subcordate at the base, 3.5 mm. long, the claw 5 

 mm. long; blades of the other petals 3.5 mm. long, oblong, acute at the base, the claws 2 mm. 

 long; pod obliquely obovate, pubescent. 



Type collected in Arizona, 1874, Rolhrock (Wheeler Exp., in herb. Columbia Univ.). 



Distribution: Southern Utah and Arizona. 



42. Petalostemon Searlsiae A. Gray, Proc. Am. Acad. 8: 380. 

 1873. 



Kuhnislera Searlesiae Kuntze, Rev. Gen. 192. 1891. 



A perennial, branched at the woody base; stem 3-5 dm. high, decumbent at the base, 

 glabrous, striate, conspicuously glandular-punctate; leaves ascending, 3-5 cm. long; stipules 

 subulate; leaflets 3-7, oblong or oblanceolate, 10-15 mm. long, involute on the margins, yellow- 

 ish-green above, paler and conspicuously punctate beneath, acute at each end; spikes long- 

 peduncled, cylindric, in fruit 1-4 cm. long, about 1 cm. thick; bracts rhombic-oblanceolate, 

 acute or short-acuminate, glabrous, equaling the calyces; calyx 4 mm. long, long-pilose; lobes 

 lanceolate, acute or acuminate, slightly shorter than the tube; corolla rose- purple; blade of 

 the banner broadly cordate, emarginate at the apex, 3 mm. long and about as broad, the claw 

 4 mm. long; blades of the other petals oblong or obovate, 3-4 mm. long, the claws about 1 mm. 

 long; pod pubescent. 



Type locality: Pahranagot Mountains, southern Nevada. 



Distribution: Southern Nevada and Utah, and northern Arizona. 



19. KUHNISTERA Lam. Encyc. 3: 370. 1789. 



Galesia Bertol. Novi Comm. Bonon. 9: 212. 1849. 



Perennials, with long tough tap-roots. Leaves alternate, pinnate, with linear-filiform to 

 obovate, glandular-punctate leaflets. Flowers in corymbosely arranged terminal head-like 

 spikes, subtended by 3-4 series of broadly ovate, persistent, empty bracts. Calyx deeply 

 cleft; tube turbinate; lobes subulate-filiform, about 3 times as long as the tube, silky-plumose. 

 Corolla nearly regular; petals nearly equal, with oblong blades, but the banner long-clawed 

 and inserted in the bottom of the calyx and the other petals short-clawed, inserted at the mouth 

 of the staminal tube, and alternate with the free portions of the 5 stamens. Stamens mona- 

 delphous ; filaments united about half their length. Ovary sessile ; style filiform ; stigma minute ; 

 ovules 1 or 2. Pod jndehiscent; seed solitary. 



Type species, Kuhnistera caroliniensis Lam. 



Leaflets linear-filiform; gland-dots minute. 1. K. pinnala. 



Leaflets oblong to obovate; gland-dots very conspicuous. 2. A.', adenopoda. 



1. Kuhnistera pinnata (Walt.) Kuntze, Rev. Gen. 192. 1891. 



Anonymus pinnalus Walt. Fl. Car. 103. 1788. 



Kuhnislera caroliniensis Lam. Encyc. 3: 370. 1789. 



Petalostemon corymbosus Michx. Fl. Bor. Am. 2: 50. 1803. 



Dalea Kuhnistera Willd. Sp. PI. 3: 1337. 1803. 



Psoralea corymbosa Poir. in Lam. Encyc. 5: 694. 1804. 



Dalea corymbosa Poir. Diet. Sci. Nat. 12: 462. 1818. 



Galesia alabamensis Bertol. Novi Comm. Bonon. 9: 213. 1849. 



Petalostemon corymbosus trifoliatus Chapm. Fl. S. U. S. ed. 3. 101. 1897. 



A perennial, with a long slender tap-root; steins solitary or a few 3-11 dm. high, corym- 

 bosely branched above, glabrous; leaves 1-2 cm. long, spreading, glabrous, usually with smaller 

 ones fascicled in their axils; stipules minute, subulate; leaflets 3-7, linear-filiform, 5-10 mm. 

 long, less than 0.5 mm. thick; outer empty bracts purplish-brown, broadly ovate, nearly or- 

 bicular, ciliolate, the inner subtending the flowers much smaller, oblong; calyx-tube scarcely 

 2 mm. long, silky; lobes 5-6 mm. long; petals white, the blades oblong, acute at each end, about 

 4 mm. long; pod 2 mm. long, densely pubescent. 



Type locality: Carolina. 



Distribution: North Carolina to Florida and Mississippi. 



Illustrations: Novi Comm. Bonon. 9: pi. 10; Bertol. Bot. Misc. 7: pi. 1. 



