When grown in the open border they are very apt to 

 die suddenly, so that only a few plants will sometimes 

 remain out of a whole bed. This is probably owing to the 

 soil in such instances being too light, and therefore subject 

 to sudden dryness; a condition which their tender roots 

 are not formed by nature to endure. In Chile, where all 

 the species of Salpiglossis grow, they are found springing 

 from the sides of dry clay banks baked hard by the scorch- 

 ing sun of that climate ; a situation in which the moisture 

 that the earth contains is parted with with great difficulty, 

 and very slowly. 



This genus has been referred either to Bignoniaceee or 

 to Solaneee ; but surely its real affinity is with Digitalis, 

 and those other alternate -leaved Scrophularineae which 

 form the transition from the latter order to Solanese. 



J. L. 



