544 LAMIACEAE 



5. M. rotundifolia (L.) Huds. In waste places: Me. to N. Car., 



Tex. and Mex. Naturalized from Europe. 



Rare and local, scattered over most of the range, except the 

 pine-barrens. 



6. M. alopecuroides Hull. Along roadsides: Conn, to N. Y., 



Pa., N. J. and Mo. Native of Europe. 



Occasional as a weed in N. J. and Pa., apparently rather 

 rare elsewhere. 



7. M. aquatica L. In wet places: N. S. to Pa. and Ga. Natur- 



alized from Europe. 



Rare as an occasional weed near the larger cities; perhaps not 

 truly persistent. 



8. M. crispa L. In swamps and roadside ditches: Conn., N. Y., 



N. J. and Pa. Native of Europe. 



Occasional throughout our range, except in the pine-barrens, 

 there wanting. 



9. M. Cardiaca Gerarde. Wet grounds: N. S. to Pa. and D. C. 



Naturalized from Europe. 

 Occasional in the northern part of the range. 



10. M. arvensis L. In dry waste places: N. B. to N. Y., N. J., 



Pa. and Fla. Also in Cal. and Mex. Native of Europe. 

 Throughout the range, except the pine-barrens; occasional. 



11. M. canadensis L. In moist soil: N. B. to the N. W. Terr., 



B. Col., Va., Kan., N. Mex. and Nev. 



Common throughout the area, except in the pine-barrens. 



12. M. gentilis L. In waste places and along streams: N. S. to 



N. Y., N. C. and Tenn. Naturalized from Europe. 

 Occasional as a weed. 



31. Collinsonia L. 



1. C. canadensis L. In moist woods: Me. and Ont. to Wise, 

 Fla. and Kan. 



Conn. Throughout the state. 



N. Y. Rare on L. I.; S. I., thence increasing northward. 

 N. J. Occasional in Gloucester, Camden and Monmouth counties, 



thence increasing and becoming common northward; unknown 



in the pine-barrens and south of them. 



