190 Mr. Browx’s Observations on the 
irritability of the style has been lately described by Mr. Ker in 
certain species of Arctotis*. 
The second species added to the genus by Willdenow is Calea 
lobata, 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 Calea, with the character of which it 
exactly agrees. - This alteration is adopted in the first edition of 
Hortus Kewensis, where the generic character of Calea is modi- 
- fied, to admit those species that are without pappus; and by 
Gertner, who limits the genus to C. lobata and C. Jamaicensis, as 
the only species that correspond with the Linnean cbaracter. But 
as C. jamaicensis, the original species of Calea, has been shown to 
have a pappus of a very different kind, it becomes necessary to 
give a new name to Calea lobata ; and some additions being also 
wanting to its generic character, I propose the following, i the 
name of s 
NEUROLENA. 
Calea Gert. 
Involucrum imbricatum, foliaceum. Receptaculum paleaceum, 
planiusculum. Flosculi tubulosi, uniformes, bermaphroditi. An- 
there inclusæ, basi muticæ (emarginatæ). Stigmata acuta, re- 
curva. Pappus capillaris, denticulatus, persistens. 
Frutex (Americæ æquinoctialis) erectus. Folia alterna, indivisa, 
et lobata. Corymbus terminalis, compositus. Involucri subovati fo- 
* Botanical Register, i. 34. 
lola 
