Tf .4 YSIDES AND WASTES IN SPRING 



103 



varies from six to eighteen inches in height, and flowers fi'om April 

 to September. 



The Red Dead Nettle {L. jmrpureum) grows to the same height, 

 but has much smaller cordate or kidney-shaped leaves, with blunt 

 apices and crenate edges. The upper ones are very crowded, and 



THE Tellow Pimpernel. 



often tinged with red ; and all the leaves are stalked. The flowers 

 are small, of a red-purple colour (rarely white), in crowded whorls 

 in the axils of the upper leaves. The tube of the corolla is straight, 

 longer than the calyx ; and the calyx teeth are spreading. 



The third species — the Cut-leaved Dead Nettle (L. incisum or 

 L. hybridum) — is not so abundant as the other two, but moderately 

 common on waste land. Its leaves, which are all stalked, are very 



