Blake Revision of Polygala 37 



stone hills of Chacula, Huehuetenango, Guatemala. Not seen; 

 description compiled. 



Subsect. B. Hebantha, subsect. nov. 1 Folia saepius majuscula 

 submonomorphia, saepius ovata acuta ad acuminata rare obtusa, 

 infima interdum reducta sed quam superiora rarissime latiora. 

 Arilli umbo saepius minimus. Species typica P. hebantha Benth. 



a. Capsule merely ciliate at maturity, b. 



b. Leaves densely subvelutinous beneath (Santa Lucia and 



Santo Domingo) 40. P. sancta-luciae. 



b. Leaves not subvelutinous beneath (Mexico and Central 

 America), c. 

 c. Pubescence fine, the hairs appressed or strongly in- 

 curved, d. 

 d. Stem and leaves sparsely strigillose; leaves narrowly 



lanceolate (5.4-6.5 cm. long, 9-14 mm. wide) . . . 43. P. longipes. 

 d. Stem and leaves usually densely strigillose or in- 

 curved-puberulous; leaves broader in propor- 

 tion, e. 



e. Flowers 9 mm. long or more 67. P. Seleri. 



e. Flowers 6-7 mm. long, /. 

 /. Leaves and upper part of stem pale, glauces- 

 cent; aril with narrower scarious border 



(see fig. 38) 45. P. appressipilis. 



f. Leaves and stem green; aril with broader sca- 

 rious border (see fig. 27) 46. P. velata. 



c. Pubescence (at least in part) of longer spreading 

 hairs, g. 

 g. Dorsal margin of aril horizontally spreading, h. 

 h. Wings ciliate; capsule narrowed at base; dorsal 



margin of aril 2.8 mm. long 47. P. Galeottii. 



h. Wings nearly glabrous; capsule broad at base; 



dorsal margin of aril 2 mm. long 50. P. jaliscana. 



g. Dorsal margin of aril descending at an angle of about 



45 48. P. rivinaefolia. 



49. P. Albowiana. 

 a. Capsule more or less pubescent on sides at maturity, i. 

 i. Wings broadly oval or orbicular-oval, less than twice as 

 long as wide, j. 

 j. Capsule deltoid-quadrate, distinctly narrowed from 



near base toward apex; aril 1 mm. deep 52. P. pedicellata. 



j. Capsule elliptic, not narrowed from base to apex; aril 

 deeper, k. 

 k. Aril horizontal, crenate-dentate, the dorsal lobe pro- 

 longed, the lateral lobes obsolete (Martinique) .41. P. antillensis. 

 k. Aril otherwise (Mexico and Central America), I. 

 I. Keel 3.2-3.5 mm. long; capsule narrowed toward 



base, with rather broad vallecula 55. P. brachytropis. 



I. Keel 4.2-6.8 mm. long, m. 



m. Wings rather densely pubescent over whole 



outer surface 56. P. americana. 



m. Wings sparsely pubescent along costa and base, 

 or subglabrous, n. 

 n. Stem without long spreading hairs, o. 



1 P. serpens (no. 19) and P. Conzattii (no. 21) might be sought here. 



