EXPLANATION OF THE PLATES. 



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

 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 $ on the plates 

 indicates the antheridia. 



Genera of Musci. 



Tab. I. 



ANDRiEA — Plant, capsule before dehiscence, the same after dehiscence, and calyptra of 

 A rupestris, Turn. : after Schimper. 



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

 operculum of S. cymbifolium, Dill. 



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



portiou of the calyptra of A. Ohioense, Schimper. 



PHASCDM.— Plant, the same enlarged, capsule, and calyptra of P. cuspidatum, Schreb. : 

 after Schimper. 



• BRUCHIA. — Plant, and a plant enlarged, capsule, and calyptra of B. brevifolia, Sulliv. 



GYMNOSTOMUM. — Plant, capsule, operculum, and calyptra of G. rupestre, Schwcegr. : 

 after Schimper. 



WEIS1A. — Plant capsule with operculum and calyptra, and five teeth of the peristome of 

 W. viridula, Brid. : after Schimper. 



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

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



DICRANODONTIUM. — Plant, capsule with the operculum, two 2-partcd teeth of the peri- 

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



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

 A. fulvella : after Schimper. 



SELIGEKIA. — Plant, capsule with operculum and calyptra, and three teeth of the peri- 

 stome of S. tristicha, Bryol. Europ. : after Schimper. » 



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

 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 P. taxifolius, Hedw ■ after Schimper. 



CAMPTLOPUS — 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 perichaetial leaves, three 

 teeth of the peristome, and calyptra of 0. Julianum, Mont. : after Schimper. 



