84 Polygonum sagittatam. 



rose-red, and rarely continuing an hour or two expanded. Grows 

 with the preceding species, and flowers at the same time. 



A polymorphous genus, containing twenty -three North American 

 species, nearly all of which are herbaceous. It is divided into two 

 sections. First, hairy ochrese, many-flowered, (3-5,) which comprises 

 twenty species — the second, called Polygonella — having these charac- 

 ters. Calix five-leaved, ochrese one-flowered; racemes dichotomously 

 paniculate; leaves spathulate, small, (flowers often dioicous.) stamens 

 eight, stigmas three, sub-capitate. 



The table represents the plant the size of nature. 



