512 
APPENDIX. 
[B. 
Hoya (hardly Asclepias carnosa of Linne) Cynanchum, 
Gymnema, Gymnanthus, Sarcostemma, and probably Seca- 
mone, as belonging to Asclepiadese, and all the genera of 
Mr. Brown (Lyonsia excepted) referred to the latter order, 
exist on that extensive coast, where Balfouria and Alyxia 
have each an accession of species. Of Strychnos, which is 
also frequent, and probably produces its flowers during the 
rainy season (as has been remarked of this genus in other 
countries) specimens in that stage of its fructification are 
still a desideratum ; all that is known respecting the plant 
being the form and size of its fruit, which in some species 
varies considerably. 
Goodenoviji. — The Herbarium contains very few speci- 
mens of this considerable Australian family, the greater 
mass existing in and to the southward of the parallel 
of Port Jackson. The order is reduced to Goodenia, Scse- 
vola, Velleia, and the tropical Calogyne on the North- 
west Coast, and the few species of the two first genera 
prove to have been formerly discovered upon the South 
Coast during the voyage of Captain Flinders, of which one 
plant has also a much more extensive range than has been 
given it heretofore. It is Sceevola spinescens, which forms a 
portion of the harsh, rigid vegetables of Dirk Hartog’s Island 
on the West Coast, and from that shore probably occupies 
a part of a very considerable extent of barren country in 
the interior, in a direction towards the East Coast, having 
been seen in abundance in the latitude of Port Jackson, so 
near that colony as the meridian of 146° 30' East. A new 
Velleia, discovered on the North-west Coast in latitude 16°, 
augments that genus, belonging to the section with a penta- 
phyllous calyx. 
