474 MR. G. BENTHAM ON COMPOSIT X. 
curious monotypic genus, however, from the Siwalik hills of East 
India, Catamixis of Thomson, has really the pentamerous regu- 
larly 5-toothed corollas of Cichoriaceze, but with the anthers, styles, 
achenes, and involucres of Mutisiacee, thus forming a real point 
of connexion between the two tribes. The habit is an uncommon 
one in either tribe, being rather that of a Baccharis or a Pluchea. 
There are two very exceptional South-African genera which 
can only be referred to Mutisiacez, but for which 1 can suggest 
no near connexions :—Anisocheta, a single species, which, probably 
from some vague resemblance to Mikania in its climbing habit, pa- 
nieulate inflorescence, and few-flowered capitula, had been placed by 
De Candolle in Eupatoriacez, of which it has neither the anthers 
nor the style, nor the corolla, nor the opposite leaves. Though 
far distant, yet it appears to me to be better placed near the 
Gochnatia group than in any other position I can assign to it. 
The other is Oldenburgia, three species, perhaps not strictly con- 
geners, with all the essential characters of the Gerbera group, but 
in their singular habit coming nearer to the Brazilian Wunder- 
lichia, belonging to the Gochnatia group. The only American 
plant of the Gerbera group approaching it in habit is perhaps the 
Chilian monotypic Pachylena, 
Hesperomannia is an insular (Sandwich-Island) monotypic 
genus of the Gochnatia group, of arborescent habit, with the 
large capitula, achenes, and pappus of the Brazilian typical Stifftia, 
from which it differs in the involucre and style. 
The fifth subtribe, Nassauviez, with the corollas more con- 
stantly and distinctly bilabiate than several of the preceding 
subtribes, has also rather different connexions, having gene- 
rally the styles and occasionally the involucres of Senecionidee. 
It is exclusively American, chiefly southern and western, 
extending into North America only along the Mexican region 
to California. The genera, as consolidated by the most recent 
synantherologists (without going quite so far as Schultz Bipon- 
tinus) are natural and well defined, some of them quite iso- 
lated except as to the general tribual characters. Perezia, forty, 
and Trixis, thirty species, extend from the Argentine States 
and Chili to Mexieo, with.one or two more eastern tropical 
species in Brazil or the West Indies. Proustia, six or seven 
species, very nearly allied to Perezia, with the habit of some 
Gochnatie, is generally South-Andine, but is also represented 
in Mexico. Jungia, with twelve species, very near Trizis, does 
