242 ON THE APOCINEJ3. 



7i] lato-linearia, falcata, denticulis interpetiolaribus. Cymce 

 trifidse, laterales et terminales. 

 Patria. Nova Hollandia tropica. 



Obs. I have named this genus in memory of Sir Andrew 

 Balfour, the founder of the Edinburgh Botanic Garden 

 and Museum, of whose merits in natural history, especially 

 in botany, an interesting account is given by his friend Sir 

 Robert Sibbald, in a small volume, entitled, " Memoria 

 Balfouriana." 



NERIUM. [Nerii sp. Linn, et Juss. 



Char. Corolla hypocrateriformis. Faux coronata fo- 

 liolis lacero-multifidis. Limbi laciniis tortis, inaequalateris, 

 ecaudatis. 



Stamina. Filamenta medio tubo inserta. Anther a 

 sagittatse aristata3, medio stigmati cohaerentes. 



Ovaria 2. Stylus 1, filiformis, apice dilatato. Stigma 

 obtusum. 



Squama nullse hypogynse .... denticuli in basi calycis, 

 extra corollam. 



Folliculi cylindracef. 



Habitus. Frutices erecti. Folia tenia, elongata, coria- 

 cea, venis namerosis, parallelis. 



Patria. India Orien talis. 



72] Obs. The only true species of Nerium are, N. Ole- 

 ander, odorum, and probably salicinum, Forsk. 



Nerium Zeylanicum and antidysentericum, form a very 

 distinct genus, which I have named Wrightia. N. coro- 

 narium is probably a Tabernamontana, and N. divaricatum, 

 from an examination of the specimen in Hermann's Her- 

 barium, on which this species entirely rests, I believe to 

 be the same plant. Nerium obesum, Forsk., seems to 

 be sui generis : it cannot, at least, be a Nerium. 



