XXX EXPLANATION OF THE PLATES. 



c. sporangium, magnified. 



d. peristome, magnified. 



e. part of peristome, more highly-magnified. 



5. Leptotrichum homomallum. 



a. plant, nat. size. 



b. leaf, magnified. 



c. sporangium, magnified. 



d. part of peristome, magnified. 



6. Didymodon flexifolium. 



a. plant, nat. size. 



b. leaf, magnified. 



c. sporangium, magnified. 



7. Distichium capillaceum. 



a. plant, nat. size. 



b. leaf, magnified. 



c. sporangium, magnified. 



d. part of peristome, magnified. 



e. ring, magnified. 



8. Desmatodon nervosus. 



a. plant, nat. size. 



b. leaf, magnified. 



c. sporangium, magnified. 



d. sporangium without lid, magnified. 



e. portion of peristome, magnified. 



PLATE XXIII. 



1. Anacalypta lanceolata. 



a. plant, nat. size. 



b. leaf, magnified. 



c. sporangium, magnified. 



d. sporangium without lid, magnified. 



e. portion of peristome, magnified. 



