WESTERN TROPICAL AMERICA. 63 
rounded by an amphitheatre of hills. Not a tree disturbs the uniformity of the 
surrounding country, but there is much foliage mingled with the buildings, and 
near at hand is a fine promenade shaded_ by trees, which travellers have called 
chestnuts, but which are really figs.—Ed. 
The vegetation of this long range of coast includes necessarily a considerable 
number of species common also to the West Indies, the north coast of South 
America, and the east coast of Central America, and of these many have long 
since been published and received into general systematic works. Those species 
which are peculiar to the western side in general, or to particular stations visited 
by the Expedition, if already published, must with few exceptions be sought for 
either in the Nova Genera et Species of Humboldt and Kunth, or amongst 
Henke’s plants, described partly in Presl’s Reliquie Henkeane, partly in 
various detached monographical papers scattered over some of the modern 
botanical periodicals, or in the later volumes of De Candolle’s Prodromus and 
Kunth’s Enumeratio. Several plants also from this region were figured by Ca- 
vanilles in his Icones, chiefly from the collections of Nee or of Tafalla, and a few 
Guayaquil species of the latter collector, have found their way into Ruiz and 
Pavon’s Flora. More recently a small number of Guatemala plants have been 
published by Bertoloni in his Florula Guatemalensis, or by myself in the Plante 
Hartwegiane, where a small Guayaquil collection is also described. By these 
means the more prominent among the species generally diffused over this region 
are not new, and are therefore here merely mentioned by name. Amongst the 
species first discovered by the officers of the Sulphur, a few from the Mexican 
coast have been already published by Hooker and Arnott, in the Supplementary 
portion of the Botany of Captain Beechey’s Voyage. These again I have 
merely referred to by name, except where better specimens have thrown any 
additional light upon their characters, or geographical range. The species now 
first described are chiefly from the more southern portion of the region from 
Panama to Guayaquil. | 
RANUNCULACEE. 
1. Ciematis acapulcensis, Hook. et Arn. Bot. Beech. p. 410, (sp. n. )—Acapulco. 
