108 Mr. Brown’s Observations on the 
Browne had doubtfully referred to the same genus, though fur- 
nished with pappus, agreeing with the others in having opposite 
leaves. TER | 
But the difference in habit between all these plants and the 
original species of Santolina is so great, that it probably after- 
wards determined Linneus to remove them from that genus ; and 
although he found a sufficient generic character in the pappus 
of Calea jamaicensis only, he united with it the two other species, 
for a reason perhaps similar to what I have su pposed led him to 
separate all the three from Santolina. It is remarkable, however, 
that not one of these three original species of Calea corresponds 
with his character of the genus ; and that they in reality belong 
to three very distinct genera, on principles which, I conceive, 
Linneus himself would have admitted. | 
The first species, Calea jamaicensis, is the only one that even 
seems to agree with the generic character, in having pappus 
which at first sight (to the naked eye at least) might appear sim- 
ply capillary, but which on a closer examination proves to be of 
à very different and nearly peculiar structure. Of this species I 
have seen only one authentic specimen, received from Browne by 
Ehret, and now in Sir Joseph Banks's Herbarium. The speci- 
men in question, though incomplete, evidently belongs to the 
same species with * Conyza fruticosa cisti odore, floribus pallide 
purpureis, summitatibus ramulorum insidentibus,” of Sloane*, of 
which I have examined the original very perfect specimens in his 
Herbarium, preserved in the British Museum, and am satisfied 
that its pappus is of the same structure as that of Calea cordifolia 
of Swartz, who has well described it, but who has at the same 
time given a different account of that of C. Jamaicensist. '|hese 
.* Hist. Jam. i. p. 257. tab. 151. fig. 3. t Herb. vol. v. fol. 14 & 15. 
1 In Flor. Ind, Occid. vol. iii, p. 1328, 
- 
two. 
