294 OBSERVATIONS ON THE NATURAL FAMILY 



of Baccharis from which the Linnean character was taken, 

 and Conyza when reduced to its original species, C. squar- 

 rosa and bifrons, and a few others since added to the genus : 

 for these differ from Inula chiefly in the extreme shortness 

 of their ligulae. 



As no satisfactory character has hitherto been given of 

 Baccharis, that will serve to distinguish it, as now limited, 

 from the dioecious Gnaphalia, I propose the following. 



us] Baccharis. 



(Richard) in Michaux Amer. ii, p. 125. Jussieu in 

 Annal du Mug. d'Hist. Nat. vii, p. 385. Molina Ruiz et 

 Pavon Prodr. Flor. Peruv. 111. Baccharidis species 

 Linn. 



Involucrum imbricatum. Receptaculum nudum. Flos- 

 culi tubulosi, dioici. Masculi : antheris exsertis, basi mu- 

 ticis ; stigmatibus appendice acuto hispidulo ; pappo sub- 

 penicillato. Feminei filiformes ; pappo capillari. 



Frutices (Americas sequinoctialis et temperatse). Folia 

 alterna, raro opposita, in quibusdam minuta vel nulla, ramis 

 tunc foliaceo-alatis. Inflorescentia terminalis rariusve late- 

 ralis, corymbosa, nunc fasciculata. Involucri subovati v. 

 oblonyi squama? semiscariosa, margine simplici. Mas pappo 

 cinereo. Fern, limbo minuto 2-Sdentato, staminibus ste- 

 rilibus nullis : pappo elongato? 



Willdenow, in his edition of Species Plantarum, has 

 retained the four Linnean species of Galea, and added to 



1 I have observed another dioecious genus with naked receptacle, capillary 

 pappus, and a habit nearly similar to "that of Baccharis, of which Baccharis 

 nereifolia Linn, is the only published species. It may be named 



BrACHYLjENA. 



Involucrum imbricatum, squamis coriaceis. Receptaculum nudum. Flosculi 

 dioici. Masculi: antheris exsertis, basi bisetis. Feminei angustiores, limbo 

 5-fido; filamentis sterilibus : stigmatibus linguiformibus imberbibus. Pappus 

 utriusque sexus pilosus scaber. 



Arbusculae vel Frutices (African australis) subtomentosi. Folia alterna inte- 

 gerrima vel dentata. Inflorescentia terminalis, subracemosa. Involucra sub- 

 ovata, brevia : squamis ovatis, textura uniformi. 



