Part 5, 1924] POLYGALACEAE 3(57 



cous, 1.3 mm. long; flowers white, 4.5 mm. long; upper sepal ovate, short-acute, the lower 

 much narrower; wings spatulate, subobtuse or short-acute, gradually clawed at base, 3-nerved, 

 exceeding corolla ; limb of keel shorter than claw, the crest of 2 lamellae and 4-5 narrower lobes, 

 entire or incised; capsule rather shorter than wings, elliptic,, narrowly subserrulate-winged 

 on one side; seed oblong, appressed-pilose, subcoraute at base, curved; aril- lobes linear, mem- 

 branaceous, descending, two-thirds as long as seed. 



Type locality: Grassy places, Zaragosa, Chimaltenango, Guatemala. 

 Distribution: Known only from the type locality. 



171. Polygala microloncha Chod. Bot. Jahrb. 52: Beibl. 

 115: 84. 1914. 



Stems virgate, striate, glabrous, 3 dm. long, denudate below, leafy and corymbosely 

 branched above, from a perennial root; leaves acicular, 7-10 mm. long, 1 mm. wide or less, 

 acute, glabrous; racemes loose, very slender toward apex, 5-9 mm. long; pedicels 1 mm. long; 

 flowers (rosy) violaceous, 3-3.5 mm. long; sepals ovate, acute, narrow, glabrous; wings elliptic- 

 spatulate, clawed, the limb oblong, 3-nerved; crest of keel of a lamella and about 3 lobes on 

 each side; capsule longer than wings, oblong-elliptic, inequilateral, very narrowly winged on 

 one side, conspicuously nerved, 3.5 mm. long; seed cylindric, barely curved; aril-lobes linear, 

 membranaceous, sinuate, one third as long as seed. 



Type locality: Limestone hills, Chacula-Uaxac Canal, Huehuetenango, Guatemala. 

 Distribution: Known only from the type locality. 



172. Polygala Watsoni Chod. Mem. Soc. Phvs. 

 Geneve 31(2) 2 : 285. 1893. 



Polygala acicularis S. Wats. Proc Am. Acad. 21: 445. 1886. Not P. acicularis Oliver, 1868. 



Stems numerous, branched, ascending from a thick woody base, 3.5 dm. long or less, finely 

 incurved-puberulous; leaves crowded, linear-acicular, 4-1 1 mm. long, 0.4-0.6 mm. wide, acumi- 

 nate at each end, mucronate, glabrous, flattish above, strongly 2-sulcate beneath; racemes 

 about 10-flowered, 8-10 mm. thick, 6-11 mm. long; flowers white with pale veins; sepals 

 oblong, abruptly acutish, denticulate above, glabrous, 2 mm. long; wings obovate, 5 mm. long, 

 1.8 mm. wide, cuneate at base, mucronate at the obtuse apex, 3-sub-5-nerved; keel 3.5 mm. 

 long, the crest of 2 lobes on each side; capsule elliptic, narrow-margined on both cells, 3 mm. 

 long, 2 mm. wide, both cells dehiscent; seed cylindric, curved, 2.6 mm. long; aril 1.8 mm. long, 

 the 2 linear scarious lobes appressed. 



Type locality: Santa Eulalia Mountains, Chihuahua. 



Distribution: Known only from the type locality. 



Illustrations: Mem. Soc. Phys. Geneve 31 (2)»: pi. 26, f. 8, 9; Contr. Gray Herb. 47: pi. 2, f. 80. 



173. Polygala caerulescens Blake, sp. nov. 



Stems several from a fruticulose base, erect, leafy, simple or sparsely branched, sulcate, 

 finely incurved-hispidulous, 9-13 cm. high; leaves linear-acicular, 7-11 mm. long, 0.5-1 mm. 

 wide, subulate-tipped, very sparsely hispidulous or glabrous, flattish above, carinate but not 

 sulcate beneath; racemes sessile, rather densely flowered, 2-3.8 cm. long, the axis minutely 

 incurved-hispidulous; bracts lance-subulate, purplish with narrow whitish margin, deciduous, 

 1.8 mm. long; pedicels 0.8-1 mm. long; upper sepal ovate, the lower lanceolate, obtuse, with 

 greenish-blue center and white margin, glabrous, 1.8-2 mm. long; wings narrowly spatulate- 

 obovate, 3.8 mm. long, 1.1 mm. wide, obtuse, 3-nerved, dark greenish-blue on claw and along 

 the nerves and sometimes purplish-tinged, white-margined; keel purplish-tinged, 2.8 mm. long, 

 the crest on each side of a lamella and a pair of lobes; capsule elliptic-oblong, 2.7 mm. long, 

 1.7 mm. wide, the upper cell very narrowly winged and with 2-3 oblique transverse veins, the 

 lower wingless, dehiscent; seeds of both cells similar, subcylindric, black, spreading-pubescent, 

 2.3 mm. long; aril 1.5-1.7 mm. long, the lobes connate into one to the obliquely emarginate 

 apex, linear-oblong. 



Type collected near Calchicomula, Puebla, Mexico, July 27, 1901, J. N. Rose 6" R. Hay 5786 

 (U. S. Nat. Herb. no. 395573). 



