A GUIDE TO THE WILD FLOWERS 



V 



249 



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Leaf teeth sharp ; plants 1-3 ft 



Red Hemp Nettle no. 769 



Leaf teeth rounded ; plants 8-18 in Henbit no. 770 



766. Common Hoarhound. Marrubium vulgar e. An erect 

 Eurasian perennial with woolly stem and foliage. Leaves 

 stalked, decidely rough, oval or nearly round, 1-2 in. long, 

 the teeth rounded. Flower clusters practically stalkless, rather 

 dense, among the upper leaves, never terminal. Corolla white, 

 small. In fields and waste places. Maine and Ontario to Ala- 

 bama, and westward. August. Fig. 766. 



767. Ground Ivy. Glechoma hederacca. (Nepeta hederacea.) 

 A prostrate, vine-like European weed, the stems often 18 in. 

 long. Leaves stalked, nearly round, about i in. long, the teeth 

 rounded. Flowers few, in open clusters, exclusively among the 

 upper leaves, never terminal. Corolla blue or violet, very con- 

 spicuously 2'.lipped. Nearly throughout North America. In 

 fields and waste places. April. Fig. 767. 



768. Motherwort. Leonurus Cardiaca. An erect, coarse, 

 stiff, Eurasian weed, 2-5 ft. high. Leaves stalked, deeply 

 3-5 cleft, the segments shallowly but distinctly toothed. 

 Flower cluster dense, many-flowered, wholly among the up- 

 per leaves and much exceeded by them. Corolla alx)ut ^ in. 

 long, pinkish-purple, very rarely white. In fields and waste 

 places. Common nearly through the United States. June- 

 Se])tember. Fig. 768. 



769. Rkd H km p- nettle. Galeopsis Tctrahit. A coarse, stiflF- 

 hairy Eurasian weed, 1-3 ft. high, but often weak, and 

 swollen below the joints. Leaves stalked, oval or lance-oval. 



