226 ANNUAL REPORT STATE GEOLOGIST. 



virginiatm, L. 

 Stenanthinm. 



angusti folium (Prush), Gray; Nuttall. 

 Amianthium, Gray. 



musccztoxicum (Wait,), Gray ; Nuttall, Harvey. 



PONTEDERIACEJE. 



Pontederia, L. 



cordata, L. 

 Heteranthera, Ruiz & Pav. 



limosa, Vahl.; Nuttall. 



graminea (Michx.), Vahl. (Schollera, Willd.) 



XYRIDACEJE. 



Xyris, L. 



caroliniana, Walt.; d' A illy. 

 torta, Smith ; Harvey. 



COMMELINACEJE, 



Commelina, L. 



hirtella, Vahl. (C evecta, Gray). 



virginica, L. 

 Tradescantia, L. 



rosea, Vent.; Nuttall. 



virginica, L. 



JUNCACEiE. 



Juncus, L. 



acuminatus, Michx.; Nuttall, Harvey. 



var. debilis (Gray), Engelm. Near Argenta, Co- 



ville. 

 var. diffusissimus (Buchl.), Engelm.; Harvey. 

 bufonius, L.; Nuttall. 

 canadensis, J. Gay; Butler. 

 effus?is, L. 



filipendulns, Buchl. (/. leptocaulis, Torr. & Gr.); Leav- 

 enworth, fide Engelmann. 



