Part 5, 1924] POLYGALACEAE 329 



high, with lobulate or slightly lobed ventral margin, the umbo small, the dorsal margin sub- 

 horizontal or curved-ascending to nearly vertically descending. 



Type locality: Near Ario, Michoacan. 

 Distribution: Jalisco to Morelos. 



Illustrations: H.B.K. Nov. Gen. & Sp. pi. 512; Mem. Soc. Phys. Geneve 31(2) 2 : pi. 14, 

 f. 4-6; Contr. Gray Herb. 47: pi. 1, f. 26; pi. 2, f. 34. 



52. Polygala Seleri Chod. Bot. Jahrb. 52: Beibl. 

 115: 73. 1914. 



Stem branched, puberulous, 2-3 dm. long; leaves ovate-lanceolate, 3-5.5 cm. long, 1.2-2.2 

 cm. wide, acute or apiculate, glabrescent; racemes rather loose, 5-10 cm. long, attenuate; 

 flowers 9 mm. long or rarely longer; upper sepal very acute; wings elliptic-oblong, glabrous, 

 subobtuse or shortly acute, barely cuneate at base, twice as long" as broad, 3-nerved, 9 mm. long; 

 keel with limb about as long as claw; filaments glabrous; ovary long-pilose; capsule (imma- 

 ture) orbicular, ciliate; seed unknown. 



Type locality: Cuesta de la Conception and Jacaltenango, Huehuetenango, Guatemala. 

 Distribution: Known only from the type locality. 



53. Polygala brachytropis Blake, Contr. Gray 

 Herb. 47: 46. 1916. 



Suffruticulose below, branching, 2.5 dm. high and more, densely pubescent with short 

 incurved and long widely spreading hairs; leaves ovate, 2.5-3.8 cm. long, 1.2-1.4 cm. wide, 

 acute, mucronulate, firm, rather sparsely pubescent with incurved-spreading hairs; racemes 

 about 9-flowered, about 3 cm. long; flowers apparently ochroleucous ; sepals ovate, acute, 2 

 mm. long; wings elliptic, 3.8 mm. long, 2.5 mm. wide, rounded at apex, cuneate at base, cilio- 

 late, along costa sparsely puberulous; keel greenish, 3.2-3.5 mm. long; submature capsule 

 oval, ciliate and rather densely incurved-puberulous, 9.5 mm. long, the vallecule 1 mm. wide, 

 1 mm. high; seed unknown. 



Type locality: Zimapan, Hidalgo. 

 Distribution: Known only from the type locality. 



54. Polygala americana Mill. Gard. Diet. ed. 8. 

 Polygala no. 7. 1768. 



Several-stemmed, erect, fruticulose, slightly flexuose, 1.2 dm. high, densely pubescent with 

 incurved-spreading rather short equal hairs; leaves ovate to obovate, 1.4-2.3 cm. long, 8-11 

 mm. wide, acute or the lower rounded at apex, acute at base, mucronulate, firm but rather 

 thin, with about 2 pairs of lateral veins, somewhat reticulate, rather densely pubescent both 

 sides with incurved-spreading hairs; racemes rather loose, 1.2-4 cm. long; flowers purplish; 

 sepals lanceolate or oblong-lanceolate, rather densely incurved-spreading-pubescent, 4-4.5 mm. 

 long; wings oval, 5-7 mm. long, 3-4 mm. wide, obtuse, rather densely pubescent all over out- 

 side with rather long incurved-spreading hairs; keel glabrous, 5 mm. long; capsule (immature) 

 oval, reticulate, densely spreading-pubescent with straightish hairs, 6 mm. long, on a spreading- 

 pilosulous pedicel 1.8-3 mm. long; seed unknown. 



Type locality: Veracruz. 



Distribution: Known only from the type locality. 



55. Polygala pedicellata Blake, Contr. Gray 

 Herb. 47: 45. 1916. 



Stems few, fruticulose below, suberect, branched, about 4 dm. high, rather densely incurved- 

 puberulous; middle and upper leaves ovate, 2.3-3.4 cm. long, 0.9-1.6 cm. wide, subacuminate, 

 cuspidulate, rather densely incurved-pubescent ; racemes 3.5-7 cm. long; flowers purplish; 

 sepals ovate or ovate-lanceolate, acuminate, 2.5-3 mm. long; wings oval, 5-6.5 mm. long, 3.5- 

 4.5 mm. wide, very shortly subacute at apex, unguiculate at base, rather densely subspreading- 

 pilosulous over whole outer surface ; capsule usually suborbicular, rarely deltoid-quadrate and 

 somewhat narrowed above, spreading-pubescent, 7.5-S mm. long; seed 4.6 mm. long; aril 



