IOWA ACADEMY OF SCIENCES. 115 



Porella p'mnata L. Thus far collected only in Jackson 

 county, in 1896. 



P. i^latyphiiUa Lindb. Very common on mossy banks, etc., at 

 Iowa City, Mason City and Ft. Dodge; also near Decorah {P.C. 

 Myers.) Reported from Story county by Bessey (/. c). 



PtUidiuiii ciliare Nees. On rotten logs; Iowa City; not rare. 



Lophocolea heterophiji/a Nees. Very common on mossy banks 

 near Iowa City. 



GhiloscyphuH polyantlios Corda. Common in moss on moist 

 banks, rotten logs, etc. ; Iowa City, Ft. Dodge, and Wildcat 

 Den, Muscatine county. 



Juiuie una u Ilia ventricosa Dicks. On moist banks; in moss 

 at Iowa City and Ft. Dodge, and on Anthoceros in Muscatine 

 county, along the Cedar. Also collected at Iowa City by Miss 

 Linder. 



Blasia pusilla L. Abundant on dripping rocks at Wildcat 

 Den, Muscatine county. 



Order Anthocerotace.'E. 



Anthooeros kcvis L. On wet clay-banks, Johnson county. 

 Also collected by Miss Linder. Not common. Also reported 

 from Story county by Bessey (J. <■ ). 



A. punctatus L. Oa low, wet banks in Muscatine county, 

 along the Cedar river. 



Order Marchantiace.e. 



Marchantia polymorpha L. Usually on rather moist banks 

 and slopes, — sometimes on hard- beaten soil and cinders, as 

 along the streets of Iowa City. Common at Iowa City, Mason 

 City, and Fores ■ City. Also, Emmet county {R. T. Crafty) and 

 Decorah {P. C. Myers). Reported from Story county by Bessey 

 (/. c). 



C'onoreplirilHs ronicus Dumort. Very common on moist banks 

 at Iowa City, and not uncommon in Muscatine and Louisa 

 counties. Also at Decorah (P. C. J/?/(^y.s). Reported from Story 

 county by Bessey {1. c). 



Grhnaldla barbifroiis Bisch. Common on rocky banks and 

 bluffs; sometimes in very barren places. Johnson, Linn, Mus- 

 catine, and Lyon counties. 



A.stereUa hemlspluerica Beauv. Not rare at Iowa City, on 

 mossy, rocky banks, etc. 



Lumdaria vulgaris Raddi. Introduced. Formerly common 

 in the hothouse at Iowa City. Never fruiting here. 



