376 NORTH AMERICAN FLORA [Volume 24 



stipe 4 mm. long, the body lance-linear, tapering at each end, 3-3.5 cm. long, 6-7 mm. 

 wide, a little sulcate on the lower suture, the partial septum 1 mm. wide; seeds 10-11. 



Type locality: Sierra Tequila, Jalisco. 

 Distribution: Jalisco to Nuevo Le6n. 



27. Atelophragma zacatecanum Rydb. Bull. Torrey Club 

 55: 157. 1928. 



A perennial; stems rather stout, about 5 dm. high, sparingly short-pubescent with ascend- 

 ing hairs, terete; leaves ascending; stipules deltoid, acuminate, 5-6 mm. long; leaflets 9-15, 

 oblong, 6-15 mm. long, 3-5 mm. wide, strigose beneath, glabrate above, rounded at the apex; 

 peduncles 6-10 cm. long; racemes 5-15 cm. long; bracts subulate, 3 mm. long; calyx long-pilose, 

 the tube 3 mm. long, the teeth fully 3 mm. long, attenuate; corolla cream-colored, 8-10 mm. 

 long, similar to that of the preceding species, but usually smaller; pod glabrous, the stipe about 

 4 mm. long, the body oblong, acute at each end, 2-2.5 cm. long, 5 mm. wide, sulcate on the 

 lower suture, the septum narrow, nearly 1 mm. broad; seeds 6-S. 



Type locality: Zacatecas. 



Distribution: Known only from the type locality. 



28. Atelophragma tioides Rydb. Bull. Torrey Club 

 55; 157. 1928. 



A cespitose perennial; stems decumbent, much branched, 3-5 dm. high, slender, terete, 

 strigose; leaves ascending, 5-7 cm. long; stipules deltoid, 3-4 mm. long; leaflets 13-21, obovate, 

 usually retuse at the apex, 5-10 mm. long, 4-7 mm. wide, pilose beneath, glabrate above ; 

 peduncles 4- 1 cm. long ; racemes 3-5 cm. long, rather few-flowered ; bracts subulate, 3 mm. long ; 

 calyx minutely black-hairy, the tube 3 mm. long, the teeth subulate, 2 mm. long; corolla 

 cream-colored, about 1 cm. long; banner obovate, moderately arched; wings shorter, the blade 

 oblong, slightly falcate; pod glabrous, the stipe very short, shorter than the calyx-tube, the 

 body linear, about 3 cm. long, 5 mm. wide, acute at each end, rather deeply sulcate on the 

 lower suture, the septum narrow; seeds 16-18, dark-brown, 3 mm. long. 



Type locality: Valley of San Luis Potosi. 

 Distribution: San Luis Potosi. 



29. Atelophragma strigulosum (H.B.K.) Rydb. Bull. Torrey Club 

 55: 158. 1928. 



Astragalus slrigulosus H.B.K. Nov. Gen. & Sp. 6: 494. 1824. 

 Tragacantha strigulosa Kuntze, Rev. Gen. 948. 1891. 



A perennial; stem ascending or erect, sulcate or striate, 3-6 dm. high, more or less strigose 

 or pilose; leaves 5-8 cm. long, the rachis strigose; stipules lanceolate, 4—5 mm. long, the lower 

 connate; leaflets 17-25, oblong to oval, 8-20 mm. long, rounded, truncate, or retuse at the 

 apex; peduncles 6-10 cm. long; racemes 3-8 cm. long; bracts lance-subulate, 3 mm. long, black- 

 hairy; pedicels 1 mm. long; calyx black-hairy, the tube 3 mm. long, 2 mm. broad, the teeth 

 subulate, 3.5 mm. long; corolla cream-colored, about 8 mm. long; banner obovate, moderately 

 arched; wings nearly as long, the blade oblanceolate-falcate, with a refiexed auricle; keel-petals 

 6-7 mm. long, the blade broadly lunate, rounded at the apex; pod glabrous, papery, the stipe 

 4 mm. long, the body ellipsoid, acutish at each end, about 15 mm. long, 6 mm. wide, the septum 

 less than 1 mm. wide; seeds 12-16, nearly 3 mm. long, dark-brown. 



Type locality: Moran, Mexico. 



Distribution: San Luis Potosi to Oaxaca. 



Illustration: M. E. Jones, Rev. Astrag. pi. 41, f. 143; H.B.K. Nov. Gen. & Sp. pi. 586. 



30. Atelophragma hidalgense Rydb. Bull. Torrey Club 

 55: 159. 1928. 



A perennial; stem 3-5 dm. high, terete, minutely strigose, branched; leaves 5-7 cm. long; 

 stipules broadly deltoid, 3-4 mm. long, leaflets 19-27, oblong or elliptic, 3-8 mm. long, 1-4 



