228 Smooth-stemmed Form, of Foxglove 



form will remain constant under different conditions, a point which I 

 hope now to be able to test on the material received from Professor 

 Coutinho. Hybridisation as an explanation seems improbable since 

 D. Amandiana Samp., the only other native form with a glabrous habit, 

 is not mentioned by Sampaio as an inhabitant of this region but as 

 occurring in arid and stony places along a certain part of the course of 

 the Douro, and the Tua and elsewhere. 



