114 Mr. Brown's Observations on the 



in its fructification or habit, any of the three genera of which, as 

 has been shown, Galea was originally composed. This fourth 

 species, which he had at first referred to Chry.iocoma*, is now 

 known to be dioecious ; — Browne, by whom it was first described 

 and figured, and one of whose specimens I have examined, Lin- 

 neus, and even Swartz when he published his Observationes Bo- 

 tanicte, being acquainted with the male plant only ; which, how- 

 ever, all of them considered hermaphrodite: nor is there any 

 reason to doubt that Gaertner's genus Sergilus is also the male of 

 this species ; although he has ventured to describe the colour of 

 the embryo, deceived, probably, by the size of the imperfect 

 ovarium, and the colour of its inner surface. 



Professor Swartz has since given a more satisfactory account 

 of Galea scoparia, and has referred it to Baccharisf ; to which ge- 

 nus as Richard:}: and Jussieu§ have proposed to limit it, namely 

 to the dioecious species of America, it unquestionably belongs. 

 This limitation of Bflcc/iom it may, upon the whole, be expe- 

 dient to adopt; by doing so, however, a name of Dioscorides 

 is applied to a genus of plants found only in the new continent; 

 while, notwithstanding the contrary opinion is expressed by M. de 

 Jussieu ||, suflficient distinctions exist between those species ofBac- 

 charis from which the Linnean character was taken, and Coni/za 

 when reduced to its original species, C sguarrosa and bifrons, and 

 a few others since added to the genus : for these diflfer from Inula 

 chiefly in the extreme shortness of their ligulae. 



As no satisfactory character has hitherto been given of Baccha- 

 ris, that will serve to distinguish it, as now limited, from the dioe- 

 cious Gnaphalia, I propose the following. 



* Amcen. Acad. v. p. 404. etSyst. Nat. ed. 10. vol. ii. p. 1206. 



t Flor. Ind. Occident, iii. p. 1339. J Mich. Flor. Bor-amer. ii. p. 125. 



§ Annal.duMus. d'Hist. Natur. vii. p. 385. || '• c. 



Bag- 



