11(> BIOLOGICAL SOCIETY OF WASHINGTON. 



Hypnum radicale, Beauv. 



" orthocladon, Beauv. 



riparium, Hedvv. 



" vacillans, Sull. 



" hispidulum, Brid. 



" chrysophyllum, Brid. 



" stellatum, Schreb. 



" uncinatum, Hedw. 



" fluitans, L. 



" molluscum, Iledw. 



" imponens, Hedw. 



'• cupressiforme, L. 



" curvifolium, Hedw. 



" arcuatum, Ldb. ? 



" pratense, Koch. 



" stramineum, Dicks. 



Schreberi, Willd. 



" splendens, Hedw. 



" Oakesii, Sull. 



" triquetrum, L. 



B. MUSCI HEPATICI. 



Ord. i. RICCIACE.E. 



Riccia lutescens, Schwein. 

 " fluitans, L. 

 " natans, L. 

 " arvensis, Aust. 



Ord. 2. ANTHOCEROTACE.E. 

 Anthoceros punctatus, L. 



" lsevis, L. 



Notothylas orbicularis, Sull. 



Ord. 3. MARCHANTIACE.EI. 

 Marchantia polymorpha, L. 

 Conocephalus conicus, Dumort. 

 Asterella hemisphaerica, Beauv. 

 Dumortiera hirsuta, Nees. 

 Fimbriaria tenella, Nees. 

 Lunularia cruciata, Dumort. 



