168 Bicknell : Teucrium in Eastern United States 



doubt that it was nothing else than the Chamaedrys Canadense of 

 Tournefort and that therefore the name T. Virginicum L. has quite 

 properly been considered a synonym of T. Canadense L. At the 

 same time it is fairly clear that Gronovius recognized both of our 

 most common species, a discrimination of nearly two hundred 

 years ago which has remained unverified to the present day. 



But a further interest attaches to Linnaeus' treatment of his T. 

 Canadense. In his remarks touching it he refers descriptively to 

 a plant from " Canada " and also to one which he had in cultiva- 

 tion. The latter, again, can scarcely be other than his T. Virgini- 

 cum, but the former by the clearest indications of probability was 

 the Lake Champlain species of which I have spoken and which is 

 perfectly distinct from the species with which Linnaeus associated 

 it. Therefore of the six species now to be recognized it appears 

 that two only have ever received distinctive names. 



Teucrium Canadense L. Common Germander 



Erect, from .5 to over 1 dm. high, simple or above with several 

 flowering spikes : stem and inflorescence closely canescent-pu- 

 bescent : leaves rather thin, ovate to ovate-oblong or narrower, 

 rounded or rarely subcordate at base, acute or acuminate at apex, 

 6-14 cm. long, 2.5-5 cm- wide, closely and often irregularly dentate- 

 serrate, above green and thinly appressed-hirsutulous to glabrate, 

 hoary -pubescent beneath, the canescent petioles 5-12 mm. long or 

 shorter on the upper leaves : calyx often purplish, canescent, 5-7 

 mm. long, turbinate, the upper teeth acute or obtuse, the lower 

 pair slightly longer, triangular-subulate : bracts mostly not sur- 

 passing the mature calyx : spikes dense : corolla pink, 1 5-20 mm. 

 long, the outer surface minutely glandular-puberulent. 



Western _ 



to Arkansas. Low 



June-J 



New York : ex Herb. Torrey ; Head of 



Pennsylvania : Point Pleasant, E. P. B. ; Nockamixon Rock's, 



W. C. Barbour ; Easton. A. A 



Ohio : Columbus, N. L. Britton. 

 West Virginia : Ripley, C. F. Mil 

 North Carolina : Biltmore. 

 South Carolina : Pickens County. 

 Georgia : Macon, J. K. Small. 

 Tennessee : Henderson. S. M. Bait 



M 



