IS DIANDRIA, DIGYNIA. 



the gravelly banks of the Delaware, subject to the overflowing 

 of the tide, a little above Kensington, both on the Pennsylvania 

 and Jersey shores. First discovered in July, 1817, by Mr. 

 Nuttall ; shortly after, found on the Pennsylvania side, by my- 

 self. Grows with Hemianthus micranthemoides, and the 

 plants enumerated as accompanying that little aquatic herb. 

 July. 



