Part 3, \92i\ FABACEAE: GALEGEAE 165 



the tube 3 mm. long, the lobes 4 mm. long, subulate; corolla whitish, 12-15 mm. long; banner 

 orbicular, clawed, strigose without; wings oblong, with a rounded auricle on the upper side 

 obtuse, adnate to the keel-petals at the base, short-clawed; keel-petals falcate, nearly semi- 

 orbicular with a rounded base and short claw; pod sericeous. 



Tyre locality: Near Guanajuato. 



Distribution: Guanajuato to Zacatecas. 



Illustration: H.B.K. Nov. Gen. & Sp. pi. 577. 



15. Cracca Thurberi (A. Cray) Rydberg, sp nov. 



Tephrosia leucantha A. Cray, PI. Wright. 2: 36. 1853. Not T. leucantha H.B.K. 1823. 



Cracca leucantha Vail, Bull. Torrey Club 22: 27, mainly, as to description. 1895. Not C. leucantha 



Ktmf/e, 1891. 

 Tephrosia leucantha acuta M. E. Jones, Contr. W. Hot. 12: 7. 1906.* 

 Tephrosia Thurberi A. Gray ms. in herb. 



A perennial herb, with a branched woody caudex; stum 3-6 dm high, angled and striate, 

 slu ii t- villous with spreading or reflexed hairs; leaves 8-15 cm. long; stipules subulate-setaceous, 

 8-10 mm. long, caducous; petiole 5-20 mm. long; tachis short-villous, somewhat rusty; 

 leaflets 19-25, oblong, obtuse or rounded and mucronate at the apex, 2-3 cm. long, 6-10 

 mm. wide, appressed-pubescent on both sides; racemes short and dense, terminal or also 

 1 oi 2 in the upper axils; bracts subulate filiform, 5-10 mm. long, shot t- villous; calyx short- 

 villous, tawny or rusty, the tube 2.5 mm. long, the lubes subulate, attenuate, 3 mm. long; 

 corolla 15 mm. long, white, usually tinged with rose or purple, the banner hairy without; 

 pod 3-6 em. long, 4-5 mm. wide, sub-velutinous, nearly straight, 6-9-seeded; seeds pale-green, 

 reniform, 4 mm. long, 3 mm. broad. 



Tvpe collected at Mububi, Sonora, June 1851, Thurber 410 (fl.) and Bubacamori, Sonora.Sept. 

 1851, Thurber 1009 (fr.; both in herb. Columbia Univ.) 



Distribution: Arizona. Sonora, and Chihuahua. 



16. Cracca Seemanni Britten & Baker, Jour. Bot. 38: 16. 1900. 



Tephrosia virginiana Seem. Bot. Vov. Herald 280. 1856. Not T. virginiana Pers. 1807. 

 Tephrosia Scemamri K. Schum. Bot. Jahresb. 28': 442. 1902. 



A suffruticose plant; stem villous-tomentose with spreading hairs, about 3 dm. high; 

 leaves 2-4 cm. long; stipules lanceolate, acuminate; petiole short; leaflets 11-19, coriaceous, 

 oblong or ovate-oblong, mucronate, sparingly pubescent or glabrous above, white-sericeous 

 beneath, 0.8-1. 5" cm. long, about 5 mm. wide, the midrib prominent on the lower surlace ; racemes 

 terminal, few-flowered and with a few flowers in the upper axils; pedicels slender, 1-1.5 cm. 

 long, with spreading pubescence; bracts linear subulate; calyx-tube villous, the lobes narrowly 

 lanceolate, acuminate; corolla purple; wings shorter than the keel-petals, the latter about 

 7 cm. long; pod white-sericeous. 



Tvpr locality: Sierra Madre, Sinaloa. 



Distribution: Known only from the type locality. 



V. Toxicariae. Stem monopodial; racemes terminal and in the upper axils, elongate, 

 many-flowered. Leaves 1 1-41-foliolate; leaflets oblong or elliptic, thick, subcoriaceous, 

 strongly veined beneath, rounded or obtuse at each end ; stipules subulate or setaceous. Corolla 

 14-25 mm. long, yellow to white or rose-colored. Pod pubescent, usually more or less fer- 

 ruginous villous. 



17. Cracca toxicaria (Sw.) Kuntze, Rev. Gen. 175. 1891. 



Galcga toxicaria Sw. Prodr. 108. 1788. 

 Tephrosia toxicaria Pers. Syn. PI. 2: 328. 1807. 

 Tephrosia Schiedeana Schlecht. Linnaea 12: 299. 1838. 



A shrub, 5-15 dm. high, woody below; branches thick, sulcate, densely reddish- or yellow- 

 ish-vclutinous; leaves 2-3 dm. long; stipules setaceous, 1 cm. long, caducous, velutinous; 

 petiole 1-3 cm. long, as well as the lachis densely velutinous, sulcate on the upper side; 



* Type specimen not seen, but a specimen in fruit collected by M. K. Jones in Cayanopa Caflon 

 is doubtfully referred to C. Thurberi, having shorter and more appressed pubescence and smaller 

 leaflets. 



