BOTANICAL CHABA.CTEKS. 



353 



a considerable height. The stems are angular, hollow, and 

 rough ; the leaves are opposite, covered with hairs, heart- 

 shaped, lobed, or undivided, serrated, each with a pair of 



COMMON HOP Humulus lupulus. 



conspicuous membranous stipules, which curve backwards. 

 The flowers are distinct, of two kinds, male and female, 

 each produced by its peculiar plant. The male flowers 



