Page:Miscellaneousbot02brow.djvu/310

 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.

�� �