LAMIACEAE 533 



1. G. Ladanum L. In waste places: N. B. to Mich, and N. J. 



Adventive from Europe. 



Very rare as a weed, perhaps not persistent. 



2. G. Tetrahit L. In waste places: Newf. to Alask., N. Car. and 



Mich. Naturalized from Eruope. 



Occasional as a weed, especially northward. Not reported from 

 the region of the pine-barrens. 



Galcopsis versicolor Curtis and G. villosa Huds. have been collected as waifs near 

 New York and Philadelphia. 



13. Lamium [Tourn.] L. 



Upper leaves sessile or clasping. I. L. amplexicaule. 

 Leaves all petioled. 



Flowers red or purple. 



Corolla 12-18 mm. long; leaves not blotched. 2. L. purpureum. 



Corolla 20-25 mm. long; leaves usually blotched. 3. L. maculatum. 



Flowers white. 4- L - album. 



i. L. amplexicaule L. In waste and cultivated ground: N. B. 

 to Ont., B. Col., Fla. and Ark. Naturalized from Europe. 

 Locally common as a weed, especially near the larger cities. 



2. L. purpureum L. In waste and cultivated soil: R. I. to D. C. 



Native of Europe. 



Rare as a weed, near the City of New York, and on L. I. 



3. L. maculatum L. Along roadsides, escaped from gardens: 



Me. to Va. Native of Europe and Asia. 



Rare as an established escape, frequently cultivated. 



4. L. album L. In waste places: Ont. to Va. Adventive from 



Europe. 



Rare as a weed. 

 L. hybrulum Vill. has been reported as a waif, in Conn. 



14. Leonurus L. 



Lower leaves palmately 2-5 cleft, the upper 3-cleft. I. L. Cardiaca. 



Leaves deeply 3-parted, the segments cleft and incised. 2. L. sibiricus. 



Leaves coarsely dentate or incised-dentate. 3. L. Marrubiastrum. 



i. L. Cardiaca L. In waste places: N. S. toN. Car., S. Dak. and 

 Kan. Naturalized from Europe. 



Rather common as a roadside weed in most parts of our range. 



