[Vol. 8 
162 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
pinnatifid, obtuse, 2-12 cm. long, narrowed at base into a slen- 
der petiole; cauline leaves rather remote, oblanceolate, entire, 
acute or obtuse, 7-25 mm. long; petals white, pink or purplish, 
7-9 mm. long, blade narrowed to a distinct claw; filaments 
slightly broader at the base; fruiting inflorescence elongated; 
pedicels slender, horizontal to recurved, 6-15 mm. long; pods 
E dal to pendent, sessile, glabrous, globose, 4-6 mm. in 
diameter; styles about 2 mm. long; septum strongly nerved, 
areolae inclined to be tortuous; ovules 2-5 in each cell, funiculi 
short, attached to septum for about one-half their lengths; seeds 
flat, not winged. 
Distribution: southwestern Texas, southern New Mexico, 
southeastern Arizona, northern Sonora, Chihuahua and Coa- 
huila. 
Specimens examined: 
Texas: Chenates region, 1889, Nealley 477 (U. S. Nat. Herb.) ; 
mouth of Pecos River, Oct., 1883, Havard (U. S. Nat. Herb.); 
Langtry, Val Verde County, Oct., 1892, Nealley 121a (U. S. 
Nat. Herb.); Roma, Starr County, 1899, Nealley 268 (U. S. 
Nat. Herb.); stony hills near El Paso, March and April, 1852, 
Wright 1320 (Mo. Bot. Gard. Herb.); El Paso, 1881, Vasey 
(U. S. Nat. Herb.); El Paso, April 17, 1884, Jones 3722 (U. S. 
Nat. Herb.); dry hills, vicinity of El Paso, 1911, Stearns 137 
(U. S. Nat. Herb. and Mo. Bot. Gard. Herb.). 
New Mexico: Organ Mountains, May 15, 1892, Wooton (U. 
S. Nat. Herb.); Filmore Canyon, Organ Mountains, Aug. 4, 
1895, Wooton (U. S. Nat. Herb.); Organ Mountains, Sept. 4, 
1897, Wooton (U. S. Nat. Herb.); Organ Mountains, April 15, 
1899, Wooton (U. S. Nat. Herb. and Deam Herb.) ; Organ Moun- 
tains, March 18, 1900, Wooton (U. S. Nat. Herb.) ; Organ Moun- 
tains, April 4, 1903, Wooton (U. S. Nat. Herb.); Bishop's Cap, 
Organ Mountains, March 30, 1905, Wooton (U. S. Nat. Herb.) ; 
Van Pattens, Organ Mountains, June 10, 1906, Standley (U. S. 
Nat. Herb.); Organ Mountains, June 9, 1906, Standley (U. S. 
Nat. Herb. and Mo. Bot. Gard. Herb.); Florida Mountains, 
March 7, Herrick 304 (U. S. Nat. Herb.); Big Hatchet Mountain, 
May 18, 1892, Mearns 4 (U. S. Nat. Herb.). 
Arizona: common in the Huachuca Mountains near Igo’s 
ranch, April 11, 1908, Tidestrom 827 (U. S. Nat. Herb.); brushy 
