FLORA OF BRAZIL. 395 
Contributions towards a Frora or Brazi, being the distinctive 
characters of some new species of Cowvosrra, belonging to the 
tribe Sunuctontpem. By Grornce Garpner, Esq. F.L.S., 
Superintendent of the Royal Botanic Gardens, Ceylon. 
(Continued from p. 296.) 
4928. S. oblonga ; caule simplici piloso, foliis petiolatis oblongis 
utrinque acutiusculis serrato-dentatis triplinerviis subtus 
grosse reticulato-venosis, venis prominulis, utrinque piloso- 
scabridis, pedicellis terminalibus solitariis elongatis versus 
apicem hirsutis, involucri squamis exterioribus in appendicem 
foliaceam obovatam obtusam glanduloso-dentatam hirsutam - 
productis, intimis lineari-oblongis obtusis glabris. 
Has. Dry upland Campos in the Diamond District. July, 1840. 
Herba perennis. Caules plures ex eadem radice, sesquipedales. 
Folia opposita, 31—4 poll. longa, 12—15 lin. lata. Pedicelli 6 lin. 
longi. Capitulum hemisphericum. Involucrum 5 lin. longum. 
VicurerA, H. B. et K. 
In my Brazilian collection of Composite I find a number of 
species which are referable to the genera Viguiera, Leighia, and 
Harpalium ; but, after a careful comparison of the characters of : i 2 
these genera, I find that the only real difference between them is — — 
a mere modification of the involucrum, and as this is not con- 
sidered of sufficient importance to characterize genera in other - Ie 
tribes of the Order, I purpose to follow up the suggestion thrown - 
out by De Candolle, under the article Leighia, in the fifth volume 
of the Prodromus :— Forte Viguiera, Leighia, et Harpalium in 
unicum genus congreganda.” As he had several new species to 
add to each of these genera, it is to be regretted that he did not 
unite them all in one natural genus. In this case, however, as 
in many others, he followed too implicitly the opinions of Cassini 
and Lessing, on the genera of Composite. 
Tf we trace the history of these three supposed genera, it = p 
VOL. VIL — nate 22 
