Part 4, 1924] POLYGALACEAE 325 



37. Polygala amphothrix Blake, Contr. Gray 

 Herb. 47: 39. 1916. 

 Stems few, 1-1.5 dm. high, densely pubescent with short incurved and numerous longer 

 straight wide-spreading hairs; lowest leaves strongly reduced, oval or oval-oblong, 3.5-1 1.5 mm. 

 long, the middle and upper oblong-lanceolate or oval, 1.5-3.6 cm. long, 4.5-16 mm. wide, obtuse 

 or subacute, at base cuneate, reticulate, pubescent like the stem; racemes 4-7.5 cm. long; 

 flowers purplish; sepals ovate-lanceolate, acuminate; wings oval, 5-5.5 mm. long, 3-3.5 mm. 

 wide, rounded at apex, broadly cuneate at base, ciliolate, sparsely puberulous along costa; keel 

 greenish-yellow, equaling wings; ovary densely pilosulous; fruit and seed unknown. 



Type locality: Otinapa, Durango. 

 Distribution: Durango and Tepic. 



38. Polygala obscura Benth. PI. Hartw. 58. 1840. 



Polvgala puberula A. Grav, PI. Wright. 1: 40. 1852. 



Polygala neo-mexicana Wooton & Standley, Contr. U. S. Nat. Herb. 16: 144. 1913. 



Polvgala obscura genuina Blake, Contr. Gray Herb. 47: 30. 1916. 



Polvgala vagans Brand. Univ. Calif. Publ. Bot. 6: 365. 1917. 



Polvgala laeta Brand. Univ. Calif. Publ. Bot. 6: 366. 1917. 



IPolygala obscura macrophylla Chod.; Loesener, Verh. Bot. Ver. Prov. Brand. 58: 148. 1917. 



Many-stemmed, suffruticulose below, 1.2-3.8 dm. high, grayish-puberulous with incurved 

 or rarely slightly spreading hairs; lower leaves oblong or oval-oblong, 1.2-2.8 cm. long, 4-7 mm. 

 wide, the middle and upper oblong or oval-ovate to lanceolate or linear, 1.8-4.2 cm. long, 1.5-12 

 mm. wide, obtuse to acuminate, puberulous; racemes loose, 3.3-9 cm. long; flowers purplish; 

 sepals lanceolate, acute; wings oval-obovate or elliptic, 4.5-5.8 mm. long, 2-3.5 mm. wide, 

 rounded, sparsely pubescent along middle and toward apex; keel nearly glabrous, 4.8-5 mm. 

 long; capsule oval, when young usually densely puberulous, in age glabrate and ciliate, or more 

 or less puberulous on sides, 8-9 mm. long; seed 4-4.8 mm. high; aril 1.3-3 mm. long, veil-like, 

 appressed, with broad irregularly lobulate scarious margin and pubescent umbo, but without 

 distinct lateral and dorsal lobes. 



Type locality: Hacienda del Carmen, Oaxaca. 



Distribution: Texas and Arizona to Oaxaca. 



Illustrations: Mem. Soc Phys. Geneve 31(2) 2 : pi. 13, f. 31-32; Contr. Gray Herb. 47: 

 pi. 1. f. 18. 



Polygala obscura euryptera Blake, Contr. Gray Herb. 47: 31. 1916. Wings 6-6.5 mm. long, 

 4-4.5 mm. wide; keel 6-6.5 mm. long; capsule 10 mm. long, 8 mm. wide. Oaxaca. Illustration: 

 Contr. Gray Herb. 47: pi. l,f. 19. 



39. Polygala Lozani Rose, Contr. U. S. Nat. 

 Herb. 13: 307. 1911. 



Polygala calcicola Rose, Contr. U. S. Nat. Herb. 10: 122. 1906. Not P. calcicola Chod. 1893. 



Several-stemmed, fruticulose below, about 1 dm. high, curved-ascending, subcanescent 

 with dense incurved hairs; lower leaves oval, rounded, 1 1 mm. long, the upper oblong or linear- 

 oblong, 1-1.3 cm. long, 1.8-3.5 mm. wide, acutish, incurved-pubescent; racemes short, 3-4- 

 flowered; flowers yellowish-green; sepals lanceolate, acuminate, the upper subpersistent; wings 

 oval, 5-5.5 mm. long, 2.3-3.5 mm. wide, abruptly acute, cuneate at base, subpersistent, sparsely 

 incurved-puberulous at apex; capsule oval, ciliolate, on the sides sparsely pubescent or gla- 

 brous, 7.5-9 mm. long; seed 4.5 mm. long; aril 1.7 mm. high, the umbo about 0.7 mm. high, 

 the appressed scarious margin irregularly lobulate, the dorsal lobe barely indicated. 



Type locality: La Canada, near Tehuaean, Puebla. 



Distribution: Known onlv from the type localitv. 



Illustrations: Contr. U. S. Nat. Herb. 10: pi. 37; Contr. Gray Herb. 47: pi. l,f. 20. 



40. Polygala parrasana Brand. Univ. Calif. Publ. 

 Bot. 6: 365. 1917. 



Stems several, fruticulose below, procumbent, 4-10 cm. long, densely ascending-pubescent; 

 leaves oval or elliptic-oblong, 3-9 mm. long, 2.5-4 mm. wide, apiculate to obtuse, cuneate at 

 base, rather crowded, thickish, with the 2-3 pairs of lateral veins prominent beneath, pubescent 



