iair.] NEW GENERA OF PLANTS. 119 



ever, is so, yery similar to that of Portulaca as well as to 

 Montia^ though destitute of a distinct perisperm, in con- 

 nection with other characters, as to leave scarcely any 

 doubt of the propriety of arranging it with the Portulacecs 

 of Jussieu. 



Hah. On the gravelly banks of the Delaware over- 

 flowed by the tide, in Pennsylvania and Newjersey; also 

 discovered in Connecticut by Dr. Ives. 



DIANDRIA.— MoNOGYNiA. 



Natural Order, LysiMACHiiE. (^ANAGALLiDz^aa.) 

 ^HEMIANTHUS.f 



Calyx tubulosus, apice quadridentatus, deorsum fis- 

 sus. Corolla monopetala, labiata, labio superiore obso- 

 leto; inferiore tripartito, lacinia intermedia longiore, 

 arctc incurva, apice truncata. Stamina^ filamentis bi- 

 fidis, stipiti laterali antherifero. Stylus bifidus. Capsula 

 unilocularis, bivaivis, polysperma. Semina nitida, ovata. 



Herbula paludosa, repens; folia mtegra opposita et 

 verticillata; flores alterni pedicellati minuti, 



H. Micranthemotdes. 



Description, — Boot fibrous, annual. Stern dicho- 

 tomous, filiform, repent, crowded with leaves. Leaves 

 sessile, subelliptic, or oblong-elliptic, entire, oppo- 

 site and ternate, obsoletely three-nerved, rather suc- 

 culent, smooth, and of a light green. Flowers axil- 

 lary, solitary, alternate, erect while flowering, deflec- 

 ted in fruit; peduncle very short. Calyx oblong, and 



t Yrom Tfuia-v^i haif^ and otv^a^, nJlo%i>er, 



