172 Bicknell : Teucrium in Eastern United States 



Synopsis of the Species 



Pubescence of stem more or less closely hoary. 



Quiescently short-pubescent : leaves ovate-oblong, rounded at base, the upper sur- 

 face thinly hispidulous to glabrate : corolla pink, minutely glandular-puberulent. 



1. T. Canadense. 

 Downy-canescent : leaves narrowly oblong or broader, the base narrowed, the 



upper surface soft-pubescent : corolla pale pink, loosely pilose. 



2. T. littorale. 

 Soft-pubescent or downwardly villose : leaves oblong-ovate, cuneate at base, pu- 

 bescent above : corolla rose-purple, pilose-bearded. 3. 7. roseum. 



Pubescence looser, of longer spreading or recurved-spreading hairs. 



Pubescence usually dense and spreading, the inflorescence hirsute and glandular- 



4. T. occidentals 

 Pubescence shorter and sparser, the inflorescence not glandular- viscid or scarcely so. 

 Leaves thin, bracts short : corolla about three times the length of the calyx. 



firm 



5- T. boreale. 



calyx. 



6. T. menthifolium 



