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 
plapts enumerated as accompanying that little aquatic herb#, 
July. 
