STANDLEY TREES AND SHRUBS OF MEXICO. 587 



gin 3-lobed, the lateral lobes ovate, vertical, appressed, the dorsal subequal, 

 descending. 



26. Polygala compacta Rose, Contr. U. S. Nat. Herb. 8: 315. 1905. 

 Polygala pubescens A. Gray; Chod. IMem. Soc. Phys. Hist. Nat. Geneve 31*: 21. 



1893. Not. P. puiescens Mart. 1815. 



Jalisco and San Luis PotosI to Puebla ; type from the Valley of Mexico. 



Many-stemmed, ascending or erect, 10 to 20 cm. high, incurved-griseous- 

 puberulous, very leafy ; lower leaves obovate or oval, 5 to 17 mm. long, the 

 others oblong or lance-oblong, 11 to 19 mm. long, 3 to 5 mm. wide, obtuse to 

 acutish, incurved-puberulous ; racemes rather dense, 1.5 to 4 cm. long ; flowers 

 apparently ochroleucous ; wings oval or obovate-oval, 3.5 to 5 mm. long ; aril 

 1 to 2 mm. high, strongly 3-lobed, the lobes scarious, linear-lanceolate or 

 linear, descending or the dorsal more or less spreading, subequal or the dorsal 

 somewhat the longer. 



27. Polygala oaxacana Chod. Bot. Jahrb. Engler 52: Beibl. 115: 73. 1914. 

 Known only from the type locality, San Juan del Estado, Etla, Oaxaca. 

 Stems few, suffrutieulose below, bai'ely puberulous above, about 20 cm. long ; 



leaves linear, the larger 26 to 35 mm. long, 3 mm. wide, acute, glabrescent; 

 racemes 3 to 5-flowered, 3 cm. long ; flowers 6 to 7 mm. long ; wings oval ; ovary 

 densely pilose; fruit unknown. 



28. Polyg'ala longipes Blake, Contr. Gray Herb. n. ser. 47:40. 1916. 

 Oaxaca. 



Stem slender, finely strigillose, 30 cm. Ingh or more; leaves lanceolate, 5.5 to 

 6.5 cm. long, 9 to 14 mm. wide, thin, long-acuminate, sparsely and finely strigil- 

 lose ; racemes 14.5 cm. long or less ; pedicels 5 to 8 mm. long ; wings oblong- 

 oval, 6.6 mm. long, 3.3 mm. wide ; seed unknown. 



29. Polygala velata Blake, Contr. Gray Herb. n. ser. 47 : 41. 1916. 

 Chiapas. 



Erect, 35 cm. high and more, rather densely incurved-puberulous ; leaves ovate 

 to rhombic-lanceolate, 3.7 to 5.2 cm. long, 1.2 to 2.2 cm. wide, acuminate, 

 sparsely incurved-puberulous ; racemes 6.5 to 10.5 cm. long ; wings oval, 5.5 

 mm. long, 3.5 mm. wide ; aril 3 mm. high, cloaklike, the broad scarious margin 

 sparsely pilose, appressed, slightly lobulate, the umbo medium-sized. 



30. Polygala polyedra T. S. Brandeg. Univ. Calif. Publ. Bot. 6: 364. 1917. 

 Known only from the type locality, Mazatl^n, Sinaloa. 



Stem stoutish, strongly angled, 35 cm. long and more, grayish green, densely 

 strigillose ; leaves unknown ; racemes 5 cm. long or less, rather dense ; wings 

 oval, 4.5 mm. long, 3.5 mm. wide ; aril 1.8 to 2 mm. high, 1.6 to 1.8 mm. long 

 dorsally, the umbo pilose, 0.4 mm. deep, the repand-lobulate scarious margin 

 sparsely pilose, the dorsal margin horizontal or slightly upturned. 



31. Polygala galeottii Chod. Mem. Soc. Phys. Hist. Nat. Geneve 31*: 28. 1893. 

 Known only from the type locality, Rancho de Haupa, between Jalapa and 



Cordoba, Veracruz. 



Simple or sparsely branched, slightly hirsute ; leaves lanceolate, 2.8 to 4 cm. 

 long, 1 to 1.4 cm. wide, attenuate at each end, ciliate and slightly pubescent ; 

 racemes elongate, loose ; flowers 6 mm. long ; wings elliptic-obovate ; capsule 

 hirsute-ciliate ; aril 2 mm. high, 2.8 mm. long on the dorsal margin, papery, 

 crenate or undulate, scarcely lobed. 



32. Polygala rivinaefolia H. B. K. Nov. Gen. & Sp. 5: 409. 1S21. 

 Polygala albowiana Chod. Bull. Herb. Boiss. 3: 123. 1895. 

 Polygala jaliscana Blake, Contr. Gray Herb. n. ser. 47: 44. 1916. 



