182 BOTANY OF THE VOYAGE OF THE SULPHUR. 
The Ipomea mentioned, p. 135, as I. cymosa, is I, umbellata, Mey.—Chois. 
in DC. Prod. 9, p. 377,—an American species, which closely resembles the Asiatic 
I. cymosa in everything except the colour of the flower, which is yellow in 
I. umbellata, of a pure white in I. cymosa. 
The Editor having left Europe shortly after the publication of the Fourth 
Part of this Work, the two last parts, commencing at p. 97, have been completed 
by the Author of the Botanical Descriptions, who avails himself of this oppor- 
tunity of adverting to the materials from which this work is compiled. 
The principal collection placed in his hands was that made by the Editor 
himself, Mr. Hinds, through whose liberality the original specimens have been 
deposited in the subscriber’s herbarium. This extends over the whole of the 
Stations mentioned in the work. A second collection was made likewise at the 
whole or the greater part of the stations, by Mr. Barclay, the collector sent out by 
the Royal Garden of Kew, and, through the kindness of Sir William Hooker, the 
subscriber has been enabled to avail himself of a set of these plants deposited in 
Sir William’s herbarium. 
A considerable portion of the specimens described from Western Tropical 
America, were gathered by Dr. Sinclair, and presented by him to Sir William 
Hooker, in whose herbarium the originals of these species will be found, and 
many of them likewise in the subscriber's collection, who owes a very valuable set 
of them to Sir William’s liberality. 
The original specimens of the Orchiducee are in Dr. Lindley’s herbarium, 
and those of the Ferns in Sir William Hooker's. 
The total number of species gathered in the voyage amounts to near two 
thousand, of which above four hundred were previously undescribed. 
. BU GrorcGe BENTHAM. 
January, 1846. 
