PLANTS OF RHODE ISLAND. 15 



Okder 30. LYTHRACE^. 

 AMMANIA, Houston, 

 humilis, Miohx. No. Providence, Congdon. 



LYTHRUM, L. Loosestrife. 



1. Hyssopifolia, L. Warren, Greene. 



2. alatum, Pnrsh. Buttonwoods, Bailey. 



3. Salicaria, L. 



N E S ^ A , Commerson. Swamp Loosestrife. 

 verticillata, H. B. K. 



CUPHEA, Jacq. 

 viscosissima, Jacq. Tiverton, Prof. Sargent. 



Order 37. CUCURBITACE^. 



SICYOS, L. Star-Cucumber. 

 angulatus, L. 



ECHINOCYSTIS, T. c%G. Wild Balsam-Apple. 

 lobatus, T. ct G. 



Order 3S. CACTACE^. 

 O P U N T I A , Tourn. Prickly Pear. 

 vulgaris, Mill. Westerly, Bennett. 



Order 39. FICOIDE^. 

 MOLLUGO, L. 

 verticillata, L. Indian Chick-Weed. 



Order 40. UMBELLIFER^. 

 HYDROCOTYLE, Tourn. Water Pennywort. 



1. Americana, L. 



2. umbellata, L. 



3. interrupta, Mubl. Block Island, Olney. 



CRANTZIA, Nutt. 

 lineata, Xutt. 

 SANICULA, Tourn. Sanicle, Black Snakeroot. 



1. Canadensis, L. 



2. Marilandica, L. 



