46 RUBIACEJE OF CENTRAL AMERICA. 
which part was likewise examined by Theodor Hartweg, sent out. in 
1836 as plant-collector for the Horticultural Society of London (Plantz 
Hartwegiane, auct. G. Bentham). The Austrian botanist Friederichs- 
thal performed journeys through a great part of Nicaragua and Costa- 
Rica in 1839, and appears to have made great collections of plants; 
but as these are not further mentioned anywhere, it may be presumed 
that they must have perished. The largest harvest hitherto made 
known from Central America, are due to Drs. Hinds and Sinclair, and 
to Barclay ; the two former accompanied the British man-of-war Sul- 
phur, as surgeons and naturalists, on the expedition to the South Sea, 
under Captain Belcher, the last as collector for the Royal Botanic 
Garden at Kew. The plants, chiefly collected at Panama, Nicoya and 
Realejo, have been published by G. Bentham (The Botany of the 
Voyage of H.M.S. Sulphur, 1844). The Prussian J. v. Warszewics 
arrived in Central America in 1844 on purpose to establish a botanic 
garden in the Belgian colony of St. Thomas, on the east coast of Gua- 
temala; but as that colony ceased to exist after the lapse of one year, he 
travelled through the greatest part of the country from Guatemala to 
Panama, principally to collect Orchidee and other ornamental plants. 
Besides a great harvest of these, to which the garden catalogues of late 
years bear witness, he gathered valuable collections of dried speci- 
mens, which are presered in the Royal Herbarium at Schoeneberg near 
Berlin. Only few species of these have been described ; which is the 
case,also in regard to collections very lately brought home from Vera- 
gua by Mr. Seemann, who accompanied the British man-of-war Herald 
on the expedition to the South Sea. A brief account of his voyage is 
contained in Hooker’s Journal of Botany, vol. iii. for 1851. Some 
plants collected by Dr. Duchassaing, medical practitioner at Panama, 
have been described by Walpers in Linnea, vol. xxiii. The whole 
series of Rubiacee thus brought to light, scarcely exceed thirty in 
number. The following result will show that, as compared to this 
amount, a not inconsiderable increase in the family has accrued from 
my voyage; and yet we are hardly warranted in assuming that the 
whole number forms more than one-half, or perhaps one-third, of the 
species found in Central America; for the botanical treasures of the 
country are quite unknown, especially as regards the species of our 
family which have in general a very confined locality. That part which 
I had an opportunity of examining, from June 1846 to March 1842, 
