124 
Mr. Brown’s Observations on ilie 
Leontopodioides, which may be called Leontopodium, is in affi- 
nit} : intermediate between Antennaria and Gnaphalium as here 
limited, but has sufficient characters to distinguish it from both. 
The third tribe has been found only in South Africa, and con¬ 
sists of shrubs with small rigid heath-like leaves, of which the 
margins are incurved, the upper surface tomentose, and the un¬ 
der convex and nearly smooth; but by a remarkable twisting 
they are in most of the species resupinate ; a character which 
seems to have been overlooked in all the described species; 
namely, Gnaphalium muricatum , mucronatum , and seriphioides. In 
this tribe, or genus, which may be named Met alas i a, the invo- 
lucrum is generally cylindrical, and in most of the species has a 
short radius formed by the spreading coloured laminae of the inner 
scales; the flosculi are few in number, and all hermaphrodite; 
and the radii of the pappus, which fall off separately, are either 
thickened or more strongly toothed at top. 
Calea pinifolia does not even belong to this genus, though it 
has a nearly similar habit; but the margins of its leaves are revo¬ 
lute, and their tomenlum chiefly on the under surface. In these 
respects, as well as in the principal characters of fructification, it 
agrees with several shrubs, chiefly of New Holland and Van 
Diemen’s Island ; among which are Eupatorium ferrugineum , Eu¬ 
patorium rosmarinfolium , and Chrysocoma cinerca of M. Labillar- 
diere. Part of these have the inner squamae of the involucrum 
simple, as seems to be the case in Calea pinifolia ; while in others, 
as the two species referred to Eupatorium by M. Labillardiere, 
they form a short radius. These I am inclined to consider merely 
sections of one and the same genus, which may be distinguished 
by the following character, and named 
OzOTHAMNUS. 
