OF NORTH AMERICA 



different in shape, yet all entire, of this diffi- 

 cult G. once blended in Hyoseris, we have 12 

 or 15 sp. and many varieties, difficult to distin- 

 guish : the G. Acliyrastrum Necker and Cyn- 

 thia Don, appear the same ; if different they 

 must be better distinguished as to Aposeris 

 Necker with naked seeds, it differs but little 

 from my Laxanon 203, of which it appears 

 Apogon of Elliot is a 2d sp. his name was pre- 

 occupied for a fish. Our Hieraciums must per- 

 haps be divided, I had formed the G. Ophio- 

 seris with many, but the 4 G, of Necker out of 

 Hieracium must be verified and restored, they 

 are Aracium, Pianola, Willemetia, and Miegia 

 now occupied by a grass. 



961. POLYGALA, this G. now forming a 

 vast family must be divided by flowers and habit, 

 as was suggested by many botanists. I did so 

 long ago, proposing Triclisperma, Psychanthus, 

 and Muraltia with many subgenera, that must 

 soon become as in any Genera, I shall merely 

 enumerate them here, reserving my labor on 

 this family for a monograph. 



1. POLYGALA stamens 8 diadelphous, corolla 

 cristate. 



2. MUUALTIA Necker 1790, differs by corolla 

 not cristate, once Heisteriaof L. not of Jaquin, 

 since adopted by L. type P. senega &c. 



3. TRICLISPERMA Raf. 1814, type P. pau- 

 cifolia &c. 



4. PSYCHANTHUS Raf. 1814, type P, myrti- 

 folia &c. 



5. SEXILIA R. stamens 6 sessile, corolla bila- 

 biate cristate, type P. verticillata and all whorl- 

 ed species, chiefly annuals. 



6. PLOSTAXIS R. stamens 4, cor. fimbriate, 

 fl. capitate, type P. lutea &c. 



