old leaves at the base of the plant are much thicker than the 
upper ones, and have the nerves more obsolete. From H. 
carnosa the species is best known by its larger, broader, 
three-nerved leaves, and the almost entire absence of down 
upon the upper surface of the corolla. It wholly wants the 
bright red spots in the inside of the crown, and the smell 
certainly cannot be compared to that of a “ rich plum- 
cake, or a combination of that of honey with the almond 
flavour of the Peruvian Heliotrope,” (to which that of H. 
carnosa is likened by Sir J. E. Smiru,) but rather resem- 
bles that of strong and bad honey. : 
If we are correct in considering the plant to be the ori- 
ginal H. Pottsi, it is a native of the vicinity of Macao, 
where a leaf was gathered by the zealous collector to the 
Horticultural Society, whose name it bears, and which, 
being given to Mr. Sasine, and planted, soon flourished. 
The H. trinervis was brought from China by Mr. Jon 
Damper Parks. 
Descr. Stem long, branched, twining, the extremities 
frequently leafless and rooting. Leaves ovato-cordate witha 
short acumen ; when old, very thick, and between fleshy and 
coriaceous, convex below, and pale-green, with scarcely an 
appearance of nerves; above concave, deep-green, with 
one central and two lateral nerves, the middle one some- 
times sending out very obscure lateral oblique ones, the 
margin slightly revolute. Petioles rounded, short, very 
thick ; when old, clothed with a sort of pale-brown bark. 
Peduncle from the side of one of the petioles at its base, 
two inches long, bearing a compact almost globose umbel 
of flowers. Calyx with five short, broadly ovate teeth. 
Corolla rotate, of five broadly ovate, acute, very pale yel- 
low-green lobes, quite glabrous below, above so slightly 
downy that the pubescence can only be seen by the assist- 
ance of a microscope. Crown of five large, depressed, 
fleshy, ovate, spreading, white leaves, between which the 
colour is orange. 
