MOSSES AND LIVERWORTS. 193 



cells of the lower part of the leaf; 9, cells of the upper part of the leaf; 10, 10, 10, capsules ; 

 11, operculum ; 12, portion of the peristome ; 13, vaginula ; 14, sterile plant ; 15, apex of the 

 same, enclosing the sterile flower; 1C, antheridium, paraphyses, and perigonial leaf; 17, 17, 

 cross sections of stem leaf; all magnified, except figs. 1 and 2. 

 Figures 2 and 14 are inverted through a mistake of the engraver. 



PLATE VI. Bryum Calif ornicum. 



Fig. 1, plants of the natural size ; 2, a single plant ; 3, stems and branches ; 4, a branch ; 

 5, 5, 5, 5, 5, leaves ; 6, cross sections of leaf; 7, a leaf showing the areolation ; 8, portions of 

 peristome and annulus ; 9, vertical section of the same ; 10, 10, 10, capsules ; all magnified, ex- 

 cept fig. 1. 



PLATE VII. Bryum Occidentale. 



Fig. 1, 1, fertile plants ; 2, sterile plant, all of the natural size; 3, a fertile plant; 4, 4, 4, 

 leaves ; 5, base of leaf and portion of branch, showing their juncture ; 6, 6, cross sections of 

 leaf; 7, 8, base and apex of leaf, showing the areolation ; 9, cells of the lower part of the leaf; 

 10, cells of the upper part of the leaf; 11, portions of peristome and annulus, outside view ; 12, 

 vertical section of the same ; 13, 13, capsules ; 14, capsule when dry ; 15, vaginula ; 16, sterile 

 plant; 17, sterile flower ; 18, perigonial leaf, antheridium and paraphyses ; 19, perigonial leaf; 

 20, antheridum and paraphyses ; all magnified, except figs. 1 and 2. 



PLATE VIII. Hypnum Bigelovii. 



Figs. 1,1, fertile plants ; 2, a sterile plant, all of the natural size ; 3, fertile plant ; 4, portion 

 of a branch ; 5, 5, 5, leaves ; 6, apex of leaf showing the areolation ; 7, cells of the same ; 81 

 base of leaf showing the areolation ; 9, cells of the same ; 10, 11, 12, capsules, opercula, and 

 calyptra ; 13, portions of the peristome and annulus ; 14, a tooth of the peristome, side view ; 

 15, perichastium ; 16, 16, perichsetial leaves; 17, vaginula with archegonia and paraphyses; 

 18, sterile flower ; 19, antheridium, paraphyses, and perigonial leaf; all magnified, except figs. 

 1 and 2. 



PLATE IX. Hypnum Whippleanum. 



Figs. 1, 1, 1, fertile plants ; 2, sterile plant, all of the natural size ; 3, fertile plant ; 4, por- 

 tion of sterile plant ; 5, portion of a branch ; 6, 6, 6, 6, stem and branch leaves ; 7, 7, lower 

 portion of leaves showing the areolation ; 8, 8, upper portion of same, showing the areolation ; 

 9, 9, 9, 9, 9, capsules; 10, 10, opercula; 11, portion of the peristome; 12, perichastium ; 13, 

 vaginula ; 14, 15, perichfetial leaves ; 16, portion of the pedicel ; 17, sterile flower ; 18, anthe- 

 ridium and paraphyses ; 19, perigonial leaf; all magnified, except figs. 1 and 2. 



PLATE X. Hypnum calyptratum. 



Figs. 1, 1, 1, 1, plants of the natural size ; 2, portion of a plant ; 3, portion of a branch ; 4, 

 4, leaves; 5, a leaf showing the areolation ; 6, portion of same ; 7, cross section of leaf ; 8, peri- 

 chastium ; 9, perichtroial leaves ; 10, 10, capsules with operculums and calyptras ; 11, capsule 

 with operculum ; 12, capsule ; 13, calyptra ; 14, portion of peristome ; 15, sterile flower and 

 perigonial leaves ; 16, antheridium ; all magnified, except fig. 1. 



25 r 



