EXPLANATION OF THE PLATES. 



N. B. — The figures of those genera of Mosses and Liverworts to which an asterisk ( * ) is 

 prefixed, are from original drawings. The species selected for illustrating the genera are 

 figured of the natural size : their details are more or less magnified. — The sign S on the plates 

 indicates the antheridia. 



Genera of Musci. 



Tab. I. 



ANDE.3!A. — Plant, capsule before dehiscence, the same after dehiscence, and calyptra of 

 A. rupestris, Tiw-jt. ; after Schimper. 



* SPHAGNUM. — Plant, capsule with remains of the calyptra, the same cut lengthwise, and 



operculum of S. cymbifolium, Bill. 



* AROHIDrDM. — Plant, and a plant enlarged, capsule with base of the calyptra, and upper 



portion of the calyptra of A. Ohioense, Sch%7nper. 

 PHASCUM. -^ Plant, the same enlarged, capsule, and calyptra of P. cuspidatum, Schreb. : 

 after Schimper. 



* BKPCHIA. — Plant, and a plant enlarged, capsule, and calyptra of B. breyifolia, Sulliv. 

 GYMNOSTOJIUM. — Plant, capsule, operculum, and calyptra of G. rupestre, Sckwagr. : 



after Schimper. 



WEISIA. — Plant, capsule with operculum and calyptra, and fiye teeth of the peristome of 



W. viridula, Brid. : after Schimper. 

 RHABDOAVEISIA. — Plant, capsule with operculum, capsule when dry, three teeth of the 



peristome, and calyptra of R. fugax, Bryol. Europ. : after Schimper. 

 DICRANODONTITBI. — Plant, capsule with the operculum, two 2-parted teeth of the peri* 



stome, and calyptra of D. longLrostre, Bryol. Europ.: after Schimper. 

 ARCTOA. — Plant, capsule with operculum and calyptra, and two teeth of the peristome of 



A. fulTcUa : after Schimper. 

 SBLIGERIA. — Plant, capsule with operculum and calyptra, and three teeth of the peri* 



stome of S. tristicha, Bryol. Ewop. : after Schimper. 

 BARBULA. — Plant, capsule with operculum, the peristome, and calyptra of B. ungnicu- 



lata, Hedw. : after Schimper. 

 CERATODON. — Plant, capsule with operculum, capsule when dry, two 2-cleft teeth of the 



peristome, and calyptra of C. purpureus, Brid. : after Schimper. 

 FISSIDENS. — Plant, capsule with operculum, two 2-cleft teeth of the peristome, and calyp- 

 tra of F. taxifolius, Hedw. : after Schimper. 

 CAMPYLOPUS. — Plant, capsule with operculum and calyptra, two teeth of the peristome 



with a portion of the annulus, and calyptra of C. flexuosus : after Schimper. 

 TRICHOSTOMUM. — Plant, capsule with operculum, three teeth of the peristome, and 



calyptra of T. tortile, Schrad. : after Schimper. 

 CONOMITRIUM. — Plant, capsule with operculum pedicel and perichsetial leaves, three 



teeth of the peristome, and calyptra of C. Julianum, Mont.: after Schimper. 



