Part 4, 1924] FABACEAE: GALEGEAE 213 



lanceclate, acute, somewhat longer; corolla yellow, about I cm. long; pod 4-5 cm. long, 2 cm. 

 wide or more, wrinkled, pubescent when young. 



Type locality: Barranca near Cuernavaca, Morelos. 

 Distribution: Morelos to Chiapas. 



10. Diphysa microphylla Rydberg, sp. nov. 



A low shrub; branches short, often spinescent, strigose-puberulent with ascending hairs; 

 stipules subulate, 3 mm. long; leaves 2-3 cm. long; rachis sparingly strigose, sometimes with 

 minute prickles; leaflets 13-17, oblong, 2-6 mm. long, glabrous or somewhat short-pilose; 

 racemes 1-2 cm. long, 1- or 2-flowered; bracts lanceolate, 1-2 mm. long; bractlets oblanceolate, 

 obtuse; pedicels 6-8 mm. long; calyx glabrous, the tube (including the hypanthium) 5 mm. 

 long; uppermost two lobes rounded-ovate, obtuse, the lateral ones lanceolate, acute, the lowest 

 one lanceolate, acuminate; corolla pale-yellow, 1 cm. long; pod puberulent when young, 4—6 

 cm. long, 12-15 cm. broad; stipe 1 cm. long; seeds 4.5 mm. long, 3 mm. wide. 



Type collected in the vicinity of Victoria, Tamaulipas, February 1 to April 9, 1907, Edward 

 Palmer 367 (herb. N. Y. Bot. Card.). 



Distribution: Tamaulipas and Nuevo Le6n. 



11. Diphysa spinosa Rydberg, sp. nov. 



A low shrub; branches short, usually spinescent, sparingly pubescent when young, and 

 with minute prickles; stipules lanceolate, 2 mm. long; leaves about 2 cm., rarely 3 cm. long; 

 rachis puberulent and minutely prickly; leaflets 9-15, oval to oblong, 2-5 mm. long, glabrous 

 or with a few hairs along the rib and margins; racemes 1—2 cm. long, 1- or 2-flowered; bracts 

 oblong or linear, 2 mm. long; bractlets ovate, acute, 3-4 mm. long; calyx glabrous, the tube 

 (including the hypanthium) 5-6 mm. long; uppermost two lobes rounded-ovate, rounded at the 

 apex, 3 mm. long, the lateral ones lanceolate, acute, the lowest one lanceolate, acuminate, 

 somewhat longer; corolla yellow, 10-12 mm. long; pod slightly puberulent when young, 4 cm. 

 long, or more. 



Type collected at Canjob, Chiapas, March 27, 1904, E. A. Goldman 796 (U. S. Nat. Herb. no. 

 470601). 



Distribution: Oaxaca to Yucatan and Guatemala. 



12. Diphysa Thurberi (A. Gray) Rydb.; Standley, Contr. U. S. 

 Nat. Herb. 23: 479. 1922. 



Daubcnlonia ? Thurberi A. Gray. Mem. Am. Acad. II. 5: 313. 1S54. 

 Ormocarpum Thurberi Benth. & Hook.; Hemsl. Biol. Centr. Am. Bot. 1: 270. 1880. 

 Emerus Thurberi Kuntze, Rev. Gen. 181. 1891. 

 Solulus Thurberi Kuntze, Rev. Gen. 205. 1891. 



A shrub, 3-6 dm. high ; branches densely glandular-hirsute ; stipules lanceolate, acuminate, 

 deciduous, 5 mm. long; leaves about 1 dm. long; rachis densely glandular-hirsutulous; leaflets 

 19-25, oval or obovate, 6-10 mm. long, 4—6 mm. wide, glabrous on both sides, with dark veins, 

 glandular-ciliolate on the margins; racemes 4—6 cm. long, 4—7-flowered; peduncle and pedicels 

 glandular-hirsute; bracts oblong, 2 mm. long; pedicels 7-8 mm. long; bractlets elliptic or obo- 

 vate, 2 mm. long, glandular-ciliolate; calyx campanulate with an obconic base (hypanthium), 

 glabrous; tube (including the hypanthium) 5-6 mm. long; lobes lanceolate, 2 mm. long, acute or 

 obtuse; corolla yellowish, 1 cm. long; banner rounded-obovate, emarginate, almost clawless; 

 wings short-clawed, the blades obliquely oblanceolate, with a rounded apex and a rounded 

 basal auricle; keel-petals similar but broader, united above the middle, with the acutish tips 

 free; ovary stipitate, densely pubescent; pod linear, 6-S cm. long, 1 cm. broad, tapering at each 

 end, somewhat tomentose, muricate. 



Type locality: Mabibi, Ronora. 



Distribution: Sonora, southern Arizona, and western Chihuahua. 



