120 Mr. Brown's Obset^'atiotTs on the 



irritability of the style has been lately described by Mr. Key in 

 certain species of Arctotis*. 



The secoHf/ species added to the genus by Willdenow is Calea 

 lohaia, which Linneus, from the general appearance, I conclude, 

 rather than from actual examination of the plant in Clifford's Her- 

 barium, had referred to Conyza ; and having no specimen in his 

 own Herbarium, the twofold error of supposing it to belong to 

 Polygamia superflua, and to have a naked receptacle, remained' 

 uncorrected in all his subsequent works. 



Its real structure was first pointed out by Professor Swartz, who 

 consequently referred it to Galea, with the character of which it 

 exactly agrees. This alteration is adopted in the first edition of 

 Hortus Kewensis, where the generic character of Galea is modf- 

 fied, to admit those species that are without pappus; and by 

 Gaertner, who limits the genus to C. lobata and C. jamaicensis, as 

 the only species that correspond with the Linnean character. But 

 as G. jamaicensis, the original species of Galea, has been shown to 

 have a pappus of a very different kind, it becomes necessary to 

 give a new name to Galea lobata ; and some additions being also 

 Avanting to its generic character, I propose the following, and the 

 name of 



Nburol^en-a. 

 Galea Gccrt. 

 Involiicrum imbricatum, foliaceum. Receptacidum paleaceuni,. 

 planiusculum. Flosculi tubulosi, uniformes, hcrmaphroditi. An- 

 thercE inclusae, basi muticae (emargiiiatiie). Stigmata acuta, re- 

 curva. Pappus capillaris, denticulatus, persistens. 

 Frutex (Americae aequinoctialis) erectus. Folia alterna, indivisa, 

 et lobata. Corymhus terminalis, conipositiis. Involucri subovatifo- 



* Botanical Register, i, 34, 



liola 



