EXPLANATION OF THE PLATES. 417 



Grimmia (Sc/«.s/itZ/«w.). — Plant, calyptra, capsule with calyptra and 

 operculum, operculum with columella, ami two leeth of the peristome, 

 of G. apocarpa, lledw. 



Grimmia. — PhuU, capsule with calyptra, and two teeth of the peri- 

 stome with part of the annulus, of G. leucophoea, Grev. 



Racomitrium. — Plant, capsule with calyptra, operculum, and one 

 2-paiLeJ tooth of the peristoiue with a portion of the annulus, of R. 

 acicuUire, Brid. 



Hedwigfia. — Plant, calyptra, capsule with operculum, and dried cap- 

 sule, of //. ciliata, Ehrh. 



Ulota. — Plant, calyptra, operculum, capsule with calyptra, dried cap- 

 sule, and portion of the peristome (two pairs of teeth and three 

 cilia), of U. IIutchindcB, Schimp. 



Plate III. 



Buxbaumia. — Plant, calyptra, capsule with operculum, month of cap- 

 sule with peristome, and operculum with part of columella, of B. 

 apliylUi, Linn. 



Diphyscium. — Plant, calyptra, capsule, peristome, and operculum 

 with part of coliunella, of 1). foliosuDt, Mohr. 



Atrichum. — Plant, calyptra and its point more magnified, capsule 

 Mitli operculum, and peristome with epiphragm, of A. angustatum, 

 Brucli & Schimp. 



Pogonatum. — Plant, hairy calyptra covering the capsule, capsule with 

 operculum, peristome with epiphragm and four teeth, of P. urnige- 

 rnm, Beauv. 



Poljrtrichum. — Plant, hairy calyptra covering the capsule, capsule 

 with operculum, dried capsule, and three teeth of the peristome, of 

 P. coDiinune, Linn. 



Bartramia. — Plant, capsule with calyptra and operculum, dried cap- 

 sule, operculum, and portion of the peristome, of B. poiniforinis, 

 Hedw. 



Mnium. — Plant, capsule with operculum, and portion of the peristome 

 (two teeth, three perforated segments, and five cilia), of M. cuspida- 

 tuin, Hedw. 



Conostomum. — Plant, capsule with calyptra and operculum, and 

 peristome, of C. boreale, Swartz. 



Meesia. — Plant, a flower (of two antheridia, two archegonia, and four 

 parai)hyses), capsule with operculum, same without operculum and 

 dry, and two teeth and two inner segments of the peristome with a 

 part of the annulus, of 31. longlseta, Hedw. 



Funaria. — Plant, capsule with calyptra and operculum, same with 

 operculum only, operculum, and an entire tooth of the peristome 

 with the bases of two broken teeth opposite to two cilia, of F. hygro- 

 me.trica, Sibth. 



Aulacomnion. — Plant, calyptra, capsule with operculum, dried 

 capsule, and part of the peristome (two teeth, one segment split 

 along the middle, and two cilia), of A. heterostichv.ni, Bruch & 

 Schimp. 



Timmia. — Plant, calyptra attached to the pedicel, capsule with oper- 

 culum, dried capsule, and one tooth of the peristome with several 

 appendiculate divisions of the segments united by fours and a portion 

 of the annulus, of T. megapolUana, Hedw. 



