PLANTS OF ARKANSAS. 24I 



Osmunda, L. 



cinnamomca, L. 

 regaliSy L. 



EaUISETACEJE. 



Eqnisetum, L. 



hyemale, L. 



RICCIACEiE. 



Riccia, Mich. 



fluitans, L. -z^r. sullivantii, Aust. In a swamp near 

 Argenta. Another variety was found on the 

 flood plain of the Arkansas near the Iron 

 Mountain Railway bridge^ at Little Rock — 

 Coville. 



tenuis, Aust. In a swamp near Argenta — Coville. 



(Some other puzzling forms of Riccias were found, 

 which, as they were incomplete, could not 

 be determined — Coville). 



MARCHANTIACEJE. 



Aster el la. 



hemisplierica, Beauv. In the Hot Springs — Les- 

 quereux. 

 Dnmortiera, Nees. 



hirsuta, Nees. By a spring in the water-shed of 

 Salado creek, Independence county — Co- 

 ville. 

 Conocephalus. 



cocicus, Dumort. Independence county — Coville. 

 ANTHOCEROTACEJE. 



Anthoceros, Mich. 



Icevis, L. In a swamp near Argenta ; also by a chaly- 

 beate spring in section 15, township 12 N., 

 7 W. — Coville. 



JUNGERMANNIACEJE. 



Aneura, Dum. 



palmata, Nees. In a swamp near Argenta — Coville. 



G.-17. 



