388 OBSERVATIONS ON THE NATURAL FAMILY 



to what I have supposed 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, 

 Linnaeus himself would have admitted. 



Ihe 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 simply capillary, but which on a closer 

 examination proves to be of a very different and nearly 

 pecuhar 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 specimen in 

 question, though incomplete, evidently belongs to the same 

 species with " Conyza fruticosa cisti odore, floribus pal- 

 lide 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 

 109] account of that of C. jamaicensis? These two plants are 

 the only pubhshed species of this genus, for which the name 

 of Calea should be retained, and which may be distin- 

 guished by the following characters : 



Galea. 



Calese species Linncei. 



Involucrum^ imbricatum. Beceptaculum paleaceum. Flos- 

 culi tubulosi, uniformes, hermaphroditi. Jntherce basi 

 muticse. Stigmata acuta. Pappus paleaceus : radiis 

 uninerviis, pinnatifido-striatis. 



1 Hist. Jam. i, p. 257, tab. 151, fig. 3. 



2 Herb. vol. t, fol. 14 and 15. 



' In Flor. Ind. Ocoid. vol. iii, p, 1328. 

 ■" Calyx oommunis Linimsi. 



