592 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Polygala lithophila Blake, Contr. Gray Herb. u. ser. 47: 74. 1916. 



Poly gala pycnophijUa T. S. Brandeg. Univ. Calif. Publ. Bot. 6: 366. 1917. 



Sonora, Coaliuila, and San Luis Potosl. Oklahoma and western Texas to 

 Arizona ; type from Tom Green County, Texas. 



SufEruticulose, many-stemmed, spreading to erect, incurved-puberulous, 7 to 

 28 cm. liigli ; leaves dimorphous or uniform, linear to lanceolate, elliptic, or 

 ovate-lanceolate, 4 to 26 mm. long, 1 to 6 mm. wide, the lowest broader than 

 the others, coriaceous, reticulate, incurved-puberulous ; racemes 3 to 22-flowered, 

 geniculate ; flowers rosy or whitish ; wings obovate, 4 to 5.3 mm. long ; capsule 

 oval to oblong. 



56. Polygala minutifolla Rose, Contr. U. S. Nat. Herb. 13: 307. 1911. 

 Polygala nudata T. S. Brandeg. Univ. Calif. Publ. Bot. 4: 183. 1911. 

 Coahuila and Nuevo Le6u ; type collected near Monterrey, Nuevo Leon, 

 Stems very numerous, fruticulose, erect, about 15 cm. high, strigillose or 



subglabrous; leaves squamiform, linear-lanceolate, 1 to 4.5 mm. long, 0.5 

 mm. wide, acuminate ; racemes straight, 4 to 6-flovvered ; flowers white ; wings 

 oval-obovate, 4 mm. long ; capsule oblong, 2.8 mm. long. 



57. Polyg'ala desertorum T. S. Brandeg. Proc. Calif. Acad. II. 2: 130. 1889. 

 Southern Baja California ; type from Agua Dulce. 



Frutescent, several or many-stemmed, erect, strigillose, 25 cm. high ; leaves 

 linear or linear-lanceolate, 9 to 18 mm. long, 1 to 1.5 mm. wide, acute, firm ; 

 racemes loose, 5 to 9 cm. long ; flowers purple and yellow ; wings oblong-obovate, 

 glabrous, 8 mm. long, appearing apiculate; capsule oval-oblong, glabrous, 5.5 

 mm. long ; seed subsericeous, 3.5 mm. long. 



58. Polygala semialata S. Wats. Proe. Amer. Acad. 17: 326. 1882. 

 Coahuila, Nuevo Leon, and Zacatecas ; type from Monterrey, Nuevo Le6n. 

 Stems numerous from a fruticulose base, erect or lax, almost filiform, minutely 



puberulous, S to 21 cm. long ; leaves linear, 5 to 8.5 mm. long, 0.5 to 1 mm. wide ; 

 racemes 3 to 12.5 cm. long; flowers whitish; wings oval-obovate, 1.4 mm. long; 

 capsule narrowly oblong, curved, 3.6 mm. long, 1.3 mm. wide, the upper cell 

 larger and distinctly winged ; seeds cylindric, curved, 2.5 mm. long. ^ 



59. Polygala hemipterocarpa A. Gray, PI. Wright. 2: 31. 1853. *'■ 

 Chihuahua to Hidalgo ; type collected near " Deserted Rancho," on the 



border of Sonora. Texas to Arizona. 



Stems several, erect, fruticulose below, glabrous, slightly glaucous, 12 to 56 cm. 

 high ; leaves linear, 6 to 23 mm. long, 0.6 to 1 mm. wide, acute ; racemes 3 to 21 

 cm. long; flowers white; wings obovate, 3.5 to 4 mm. long; capsule oblong, 

 5 mm. long, the upper cell broadly scarious-winged ; seed 2.7 mm. long. 



60. Polygala watsoni Chod. Mem. Soc. Phys. Hist. Nat. Geneve 31 ': 285. 1893. 

 Polygala acicularis S. Wats. Proc. Acad. Amer. Acad. 21: 445. 1886. Not 



P. acicularis Oliver, 1868. 



Known only from the type locality, Santa Eulalia Mountains, Chihuahua. 



Stems numerous, ascending from a woody base, 35 cm. long or less, finely 

 incurved-puberulous ; leaves linear-acicular, 4 to 11 mm. long, 0.4 to 0.6 mm. 

 wide, acuminate, 2-sulcate beneath ; racemes 6 to 11 mm. long, about 10- 

 flowered; flowers white; wings obovate, 5 mm. long; capsule elliptic, narrow- 

 margined on both cells, 3 mm. long ; seed 2.6 mm. long. m 



61. Polygala scoparioides Chod. M6m. Soc. Phys. Hist. Nat. Geneve 31°: 284. ' 

 1893. 



Polygala scoparia multicaulis A. Gray, PI. Wright. 1 : 38. 1852. 

 Polygala wrigMii A. Gray; A. W. Benn. Joum. Bot. Brit. & For. 17: 205. 

 1879, as synonym. 



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