324 NORTH AMERICAN FLORA [Volume 25 



33. Polygala brachyanthema Blake, Contr. Gray 

 Herb. 47: 33. 1916. 



Several-stemmed, fruticulose below, 1.7-3.3 dm. high, green, incurved-pubescent; lowest 

 leaves obovate, 3-7 mm. long, the middle and upper oblong-elliptie, 1-1.5 em. long, 3-4.8 mm. 

 wide, subobtuse, strongly mucronate, cuneate at base, sparsely incurved-pubescent; racemes 

 1 2-22-flowered, 5-8.5 cm. long; flowers purplish and greenish; sepals lance-ovate, acuminate, 

 2.5-3 mm. long; wings oval, 4.5-5 mm. long, 2.3-2.5 mm. wide, obtuse or subacute, greenish, 

 ciliolate and pilosulous; keel glabrous, purplish except for the yellowish apex; capsule oval, 

 ciliolate, 7-7.5 mm. long; aril 1 mm. high, 1.6 mm. long on the dorsal margin, the umbo pilo- 

 sulous, 0.5 mm. high, the scarious margin irregularly crenulate-lobulate, produced into a short 

 horizontal dorsal lobe. 



Type locality: Minas de San Rafael, San Luis Potosi. 

 Distribution: Known only from the type locality. 

 Illustration: Contr. Gray Herb. 47: pi. l,f. 21. 



34. Polygala Brandegeeana Chod. Bot. 

 Jahrb. 52: Beibl. 115: 72. 1914. 



Many-stemmed, erectish, 7-9 cm. high, pubescent with incurved-ascending hairs; lower 

 leaves much reduced, obovate, 3 mm. long, the middle and upper oblong to oval or oblong- 

 linear, 6-10 mm. long, 1.5-4.5 mm. wide, thickish, subglabrous but lepidote above, sparsely 

 incurved-pubescent beneath; racemes very short, pseudo-lateral, 1-3-flowered; flowers green- 

 ish and purplish; sepals lanceolate to ovate-lanceolate, acuminate, the upper subpersistent; 

 wings oval, 4.5 mm. long, 2.5-2.8 mm. wide, rounded, ciliolate above, sparsely incurved-pubes- 

 cent along costa; keel greenish-yellow, glabrous, 4 mm. long; capsule oval, merely ciliate at 

 maturity, 7.5-8.5 mm. long; seed 4 mm. long; aril 1.5 mm. deep, 2.3 mm. long on the dorsal 

 margin, the umbo 0.6 mm. deep, the scarious margin irregularly lobulate, with indistinct lateral 

 lobes and distinct dorsal lobe descending at an angle of about 45°. 



Type locality: Dry places, El Riego, Tehuacan, Puebla. 

 Distribution: Hidalgo and Puebla. 

 Illustration: Contr. Gray Herb. 47: pi. l,f. 23. 



35. Polygala orthotricha Blake, Contr. Grav 

 Herb. 47: 31. 1916. 



Several-stemmed, fruticulose below, 1.5-2 dm. high, densely pilosulous with short straight 

 spreading hairs; lower leaves oval to oblong-oval, 5-11 mm. long, the middle and upper oblong, 

 lanceolate, or linear, 1.7-3.5 cm. long, 2-6 mm. wide, acute at each end, spreading-pubescent 

 and ciliate; racemes loose, few-flowered, 2-4.5 cm. long; flowers violet; sepals lanceolate, 

 acuminate, sparsely spreading-pilosulous; wings oval, 4.8-5 mm. long, 3 mm. wide, short- 

 clawed, ciliolate, sparsely puberulous toward middle; capsule oblong-oval, ciliolate and sparsely 

 spreading-puberulous, 10 mm. long; seed 4.7 mm. long; aril 2.4 mm. high, cloak-like, the 

 broad scarious margin lobulate, not distinctly lobed. 



Type locality: Foothills of the Santa Rita Mountains, Arizona. 

 Distribution: Known only from the type locality. 



36. Polygala retifolia Blake, Contr. Gray 

 Herb. 47: 29. 1916. 



Stems two or three, fruticulose below, about 4 dm. high, densely pubescent with short 

 incurved and longer straight wide-spreading hairs; lowest leaves strongly reduced, 4-11 mm. 

 long, the middle and upper linear or linear-lanceolate, 2.6-4 cm. long, 1.8-4 mm. wide, acumi- 

 nate, mucronulate, thick, reticulate-venose, pubescent like the stem; racemes 20-30-flowered, 

 8-14 cm. long; flowers apparently greenish; sepals ovate or ovate-lanceolate, 2.5 mm. long; 

 wings obovate-oval, 5-6 mm. long, 3-3.3 mm. wide, rounded at apex, scarcely clawed, sparsely 

 ciliate, along costa and on margin pubescent with ascending hairs; keel glabrous, equaling 

 wings; ovary densely pilose; fruit and seed unknown. 



Type locality: Rio Blanco, Jalisco. 

 Distribution: Known only from the type locality. 



