584 CONTBIBUTIONS FROM THE NATIONAL. HERBARIUM. 



puberulous ; racemes loose, 4 to 10.5 cm. long ; flowers apparently ochroleucous ; 

 wings narrowly obovate-oval, 4.5 mm. long; aril minute, 0.7 mm. high, with 

 very narrow scarious margin. 



8. Polygala leptosperma Chod. M6m. Soc. Phys. Hist. Nat. Geneve 31^: 17. 



1S93. 



Oaxaca. 



SufErutescent below, 12 cm. long, hirsute-tomentose above; leaves lanceolate 

 to lance-linear, 1.5 to 2.2 cm. long, siibtomentose-velutinous ; flowers 6 to 7 

 mm. long ; wings elliptic-lanceolate, long-ciliate ; capsule ovate-cuneate, hispid ; 

 aril small, capitelliform, the very narrow scarious margin with very short up- 

 turned dorsal lobe and no lateral lobes. 



9. Polygala barbeyana Chod. M4m. Soc. Phys. Hist. Nat. Gengve 31 ': 16. 1893. 

 Coahuila to San Luis Potosi; type from San Luis PotosL Arizona. 

 Several-stemmed, suffruticulose below, up to 40 cm. high, densely incurved- 



pubescent or at length subglabrate; leaves reduced, the lowest oblong, the mid- 

 dle and upper subsquamiform, linear or linear-lanceolate, 5 to 10 mm. long; 

 racemes 1.7 to 11 cm. long; wings obovate-oval or suborbicular-oval, 3.5 to 4.5 

 mm. long; aril small, 0.7 mm. high, cap-shaped, subpedicellate by the pointed 

 base of seed, with narrow unlobed scarious margin and short upturned dorsal 

 lobe. 



10. Polygala zacatecana Blake, Contr. Gray Herb. n. ser. 47: 26. 1916. 

 Known only from the type locality, near Concepci6n del Oro, Zacatecas. 

 Several-stemmed, suffruticulose below, about 12 cm. high, incurved-puberulous ; 



leaves reduced, the lower oblong or oval, 4 to 5 mm. long, the others linear- 

 lanceolate, 4.5 to 10 mm. long, 1 mm. wide, involute; racemes 2 to 5 cm. long; 

 wings oval-obovate, 4 mm. long; aril tiny, very sparsely pubescent, with sub- 

 glabrous umbo, the scarious margin entire, very narrow. 



11. Polygala intricata Blake, Contr. Gray Herb. n. ser. 47: 26. 1916. 

 Known only from the type locality, Saltillo, Coahuila. 



Stems about 10 cm. long, flexuous, ascending, densely incurved-puberulous; 

 lowest leaves oblong, 3 mm. long, the others linear or linear-lanceolate, 11 to 14 

 mm. long, 1.5 to 2.5 mm. wide ; racemes flexuous ; wings obovate, 3.5 to 4 mm. 

 long ; aril 0.8 mm. high, the umbo densely spreading-pilose, the narrower margin 

 subentire. 



12. Polygala palmeri S. Wats. Proc. Amer. Acad. 17: 325. 1882. 

 Coahuila ; type from JuSrez. Western Texas. 



Several-stemmed, subcanescently pubescent, about 15 cm. high ; lower leaves 

 oval, the others oblong or ovate-oblong, the middle and upper 16 mm. long, 4.5 

 to 7 mm. wide, obtuse or truncate, thick; racemes 4.5 cm. long; flowers greenish 

 yellow and purplish ; wings obovate, 5.7 to 6 mm. long ; aril 1.5 mm. high, with 

 narrow subentire scarious margin extended into short subhorizontal anterior 

 and dorsal lobes. 



13. Polygala racemosa Blake, Contr. Gray Herb. n. ser. 47: 28. 1916. 



Chihuahua ; type from Santa Eulalia Mountains. Southern Arizona. 



Several-stemmed, fruticulous below, about 30 cm. high, densely incurved- 

 puberulous but green ; lower leaves strongly reduced, the others linear, 15 to 

 31 mm. long, 1.5 to 3 mm. wide, acute; racemes 7 to 13 cm. long; flowers ap- 

 parently greenish ; wings oval-obovate, 4.5 to 4.8 mm. long ; aril 0.7 to 1 mm. 

 high, the scarious margin lobulate, narrower than the umbo, the dorsal lobe 

 very short, the lateral obsolete. 



