7<D ON THE APOCINEJE. 



petiolares. Calyx foliaceus, laciniis basi intus 

 squamula instructis. 

 Patria. America Meridionalis. 



P. tomentosa. 



Hab. In sepibus prope Rio de Janeiro, in Brasilia, de- 

 texit Josephus Banks, Baronettus. 



Obs. This genus is named in memory of Dr 

 Charles Preston, the correspondent of Ray, 

 and styled by him, " eruditissimus vir, et curio- 

 sissimus stirpium observator." Many of his 

 observations, chiefly on the more minute plants, 

 occur in Ray's " Methodus emendata." Blair 

 also mentions him as an ingenious and expert 

 botanist. 



BALFOURIA. 



Char. Corolla infundibuliformis. Faux corona- 

 ta, tubulo crenulato. Limbi laciniae recta?, 

 aequilateres. 



Stamina semi-exserta, fauci inserta. Antherce 

 sagittatae, medio stigmati cohserentes, mucro- 

 natae. 



Ovarium biloculare. Stylus i, filiformis, apice 



dilatato. 

 Stigma angulatum. 



Squamula 10, basi calycis extra corollam inser- 

 tse : hypogynae nullas. 



Folliculi 



Habitus. Arbor inter minores. Folia opposita, 

 lanceolato-linearia, falcata, denticulis inter- 



