ON THE AMAZON. 307 
hitherto gathered (including the one from Santarem) are of the Gapó ; 
all are remarkable for the leaves of the young plants being polymor- 
phous—pinnate, pinnatifid, or laciniated,—though this is not noted by 
Endlicher under Andriopetalum. 
The;finest tree on the Rio Negro is no. 1957, apparently an unde- 
scribed Bignoniacea. Notwithstanding its inferior ovary, I think its ` 
affinity is clearly with Bignoniacee. If the genus be new, I hope you 
will allow me to call it Henriguezia, in honour of Signor Henrique 
Antonij, a native of Leghorn, but for more than thirty years settled at 
the Barra do Rio Negro, where he has constantly rendered every as- 
sistance to scientific and other travellers during that period, as you 
may see by referring to all the works that have been lately written re- 
specting these rivers. 
An Ochnacea, no. 2012, which seems to be new, I have ventured to 
dedicate to my friend Mr. A. Wallace, the entomologist, who, besides 
his natural history pursuits, has found time to collect much curious | 
and valuable information respecting the Rio Negro and its aboriginal 
inhabitants, which, as he is about to return to England, he will pro- 
bably shortly give to the world. 
Near St. Isabel I got another large Cajú (Cashew-tree), with sweet- 
scented flowers, which I have called Anacardium suaveolens. 
My Indians came from Uanauáca, and were only engaged to take 
me thus far up the river. Uanauaca is but a single sitio, the most 
flourishing on the Rio Negro, belonging to a Senhor Manoel Jacinto 
da Souza, who was Commandant of Sad Gabriel when Schomburgk 
passed down the Rio Negro, Whilst waiting here, comes the Tochäna 
(chief) of Sad Jeronymo, on the Rio-Uaupés, with a dozen naked In- 
dians, to trade with Manoel Jacinto, and I seized the opportunity for. 
continuing my voyage by their aid. My departure was still delayed a 
few days (I was there about three weeks in all) by an attack of fever, 
which happily proved only temporary. | 
At Uanauáca I was employed in packing my plants into other paper, - 
and writing labels to them. I also varied my occupation by a few 
rambles, one of which, in particular, to an inundated campo by a lake 
on the opposite (south) side of the river, was productive of much no- 
velty. I was glad to get, at Uanauaca, a Cecropiaceous tree, of whose 
fruit I had heard much spoken in the Barra, and which is frequent near 
sitios through all the upper Rio*Negro—the great Cocura : it seems — 
