BIOLOGICAL SOCIETY OF WASHINGTON, 



Hypnum radicale, Beauv. 



orthocladon, Beauv. 



riparium, Hedw. 



vacillans, Sull. 



hispidulum, Brid. 



chrysophyllum, Brid. 

 " stellatum, Schreb. 



uncinatum, Hedw. 

 " fluitans, L. 



molluscum, Hedw. 



imponens, Hedw. 

 4i cupressiforme, L. 



curvifolium, Hedw. 

 " arcuatum, Ldb. ? 

 " pratense, Koch. 



stramineum, Dicks. 



Schreberi, Willd. 



splendens, Hedw. 

 " Oakesii, Sull. 

 " triquetrum, L. 



B. MUSCI HEPATICI. 

 ORD. i. RICCIACE^. 



Riccia lutescens, Schwein. 



fluitans, L. 

 " natans, L. 

 " arvensis, Aust. 



ORD. 2. ANTHOCEROTACE.E. 

 Anthoceros punctatus, L. 



Isevis, L. 

 Notothylas orbicularis, Sull. 



ORD. 3. MARCHANTIACEsE. 

 Marchantia polymorpha, L. 

 Conocephalus conicus, Dumort. 

 Asterella hemisphaerica, Beauv. 

 Dumortiera hirsuta, Nees. 

 Fimbriaria tenella, Nees. 

 Lunularia cruciata, Dumort. 



