202 UNIVERSITY OF MISSOURI STUDIES [344 



791. M. mollis L. [M. fistidosa mollis (L.) Benth.]. Smooth 



BERGAMOT. 



Very common in fields, thickets, and open woods: some 

 forms are close to M. scabra Beck., but all the leaves exam- 

 ined are slender-petioled. 



New England to South Dakota; Georgia to Texas. 



792. M. media Willd. i-'urple bergamot. 

 Moist thickets; scarce. 



Maine to Michigan; North Carolina to Tennessee and 

 Missouri. 



793. M. Bradburiana Beck. 

 Dry thickets; scarce. 



Illinois and Alabama to Missouri and Kansas. 



794. M. citriodora Cerv. Lemon horse-mint. 

 Along the railroad near Rocheport. 



Missouri to Nebraska and Colorado; Tennessee to 

 Texas and Arizona. 



339. BLEPHILIA Raf. 



795. B, ciliata (L.) Raf, 



Very common in fields and thickets. 

 Massachusetts to Wisconsin; Georgia to Missouri. 



796. B. hirsuta (Pursh) Torr. 

 Common in shaded alluvial flats. 

 Vermont to Wisconsin; Georgia to Texas. 



340. HEDEOMA Pers. Mock pennyroyal. 



797. H. pulegioides (L.) Pers. American pennyroyal. 

 Common in waste fields and open thickets. 



Cape Breton Island to Ontario and Minnesota; Florida 

 to Missouri and Nebraska. 



341. KOELLIA Moench. IPYCNANTHEMUM 

 Michx.]. Mountain mint. 



798. K Virginica (L.) Baill. [K.flexuosa (V^laXt.) MslcM.: 

 P. liniifoliunt Pursh]. Narrow-leaved mountain mint. 



Dry hills and thickets; common. 



Massachusetts to Ontario and Minnesota; Florida to 

 Texas. 



