168 THE JOURNAL OF BOTANY 
In the eastern parts of the alpine area of distribution the form 
pallida predominates, whereas in the southern parts the forms 
bicolor and flava prevail; but not rarely forms with different 
€ species is esa to thrive as a half-parasite on the roots 
as L. 
mo 
The following is a particular account, taken from fresh or 
recent specimens of the yellow-flowered eyebright, as it grows in 
short turf on the high and comparatively dry table-lands and 
gentle slopes of exposed Exmoor :—. 
shaped the upper‘and mid ones obtuse at the sessile or subsessile 
base or shortly petiolant, dull green, rather thickly herbaceous, 
