•Part 4, 1924] POLYGALACEAE 323 



upper linear-lanceolate or linear, 5-23 mm. long, 0.5-2 mm. wide, sessile, involute, incurved- 

 puberulous; racemes very loose, 6-9 cm. long; sepals lanceolate, acute; wings elliptic-obovate, 

 4.5-5 mm. long, 3-4 mm. wide, obtuse, rarely apiculate, abruptly contracted at base, sparsely 

 pubescent; capsule oval, ciliolate, 8-9.5 mm. long; seed 4.5-5 mm. long; aril 1 mm. high, the 

 dorsal lobe spreading, 1.5 mm. long, the lateral lobes short, subentire, slightly deeper than the 

 umbo. 



Type locality: San Luis Potosi (state). 

 Distribution: Coahuila to San Luis Potosi. 

 Illustration: Contr. Gray Herb. 47: pi. l,f. 12. 



30. Polygala longa Blake, Contr. Gray 

 Herb. 47: 29. 1916. 



Polygala tenuiloba Blake, Contr. Gray Herb. 47: 36. 1916. 



Several-stemmed, suffruticulose below, 1.3-4.5 dm. high, densely incurved-griseous-puber- 

 ulous; lower leaves oblong or oblong-oval, 0.8-1.7 cm. long, the middle and upper oblong- 

 lanceolate or -linear, 1.7-3.6 cm. long, 1.5-4 mm. wide, acute or acuminate, sometimes obtuse, 

 griseous-puberulous; racemes loose, 2-10.5 cm. long; flowers purplish; sepals lanceolate, 

 pubescent, 2.2-3.5 mm. long; wings oval or suborbicular, 3.5-5.5 mm. long, 2.4-4 mm. wide, 

 rounded, rather sparsely pubescent; keel 4-5.7 mm. long; capsule oval, ciliolate, 7-8 mm. 

 long; seed 4-4.5 mm. long; aril 1 mm. high, the dorsal margin 1.5 mm. long, the umbo 0.4 mm. 

 high, pilose, the scarious margin strongly lobulate, with subdistinct or distinct dorsal and shorter 

 lateral lobes. 



Type locality: On the Pecos River. Texas. 

 Distribution: Texas, Arizona, and Chihuahua. 

 Illustration: Contr. Gray Herb. 47: pi. l,f. 17. 



31. Polygala neurocarpa Brand. Univ. Calif. Publ. 

 Bot. 6: 364. 1917. 



Stems several, suffrutescent below, about 3 dm. long, in youth sparsely short-pubescent 

 with spreading straight hairs, in age glabrate except in the axils; leaves linear to linear-oblong, 

 0.9-2.5 cm. long, 1-4 mm. wide, short-pointed or acuminate, thickish, in youth sparsely spread- 

 ing-ciliate, soon glabrate; peduncles glabrous, 8-15 mm. long; racemes loose, 3.5-7.5 cm. long; 

 pedicels glabrous, 3-4 mm. long; flowers purplish- tinged; sepals elliptic-ovate, subacuminate, 

 ciliate, 2.8-3.3 mm. long; wings oval, 5.2 mm. long, 3.5 mm. wide, obscurely short-pointed, 

 cuneate at base, ciliate, sparsely puberulous at base; keel 5 mm. long; capsule oval, short- 

 ciliate, 8-9.8 mm. long; aril 1-1.2 mm. high, 1.4 mm. long dorsally, the rounded spreading- 

 pilose umbo 0.5 mm. deep, the slightly wider scarious margin repand or lobulate, not distinctly 

 lobed, the dorsal margin descending at an angle of 20-45°. 



Type locality: Rocky slopes, Ixmiquilpan, Hidalgo. 

 Distribution: Known only from the type locality. 



32. Polygala oophylla Blake, Contr. Gray 

 Herb. 47: 33. 1916. 

 Stems few, suffruticulose below, about 2 dm. high, densely pubescent with incurved-spread- 

 ing hairs; lowest leaves elliptic or obovate-elliptic, 4 mm. long, the middle and upper ovate, 

 11-22 mm. long, 3.5-10 mm. wide, acute or subacute, mucronate, rounded at base, incurved- 

 pubescent; racemes 9-30-flowered, 4-7 cm. long; sepals oblong-ovate, acute; flowers purplish; 

 wings orbicular-oval, 6-6.5 mm. long, 4—4.8 mm. wide, rounded, pubescent all over or only at 

 apex; keel equaling wings; capsule sparsely incurved- pubescent when young, ciliate at matu- 

 rity, oval, 6.5-7 mm. long; seed 4.5 mm. long; aril 1.6 mm. high, 2 mm. long on the dorsal 

 margin, the umbo pilosulous, 0.5 mm. high, the scarious margin 1.1 mm. high, irregularly 

 lobulate, not distinctly lobed. 



Type locality: Tlacuilotepec, Puebla. 

 Distribution: Known only from the type locality. 

 Illustration: Contr. Gray Herb. 47: pi. l,f. 22. 



