MOSSES AND LIVERWORTS. 
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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; 10, 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 YI .—Bryum Californicum. 
Fig. 1, plants of the natural size; 2, a single plant; 3, 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 YII .—Bryum Occidentale. 
Figs. 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 junction; 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, antheridium and paraphyses ; all magnified , except figs. 1 and 2. 
Plate YIII .—Hpynum Bigelovii. 
Figs. 1, 1, fertile plants ; 2, 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 ; 8, 
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, perichsetium ; 16, 16, perichmtial 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. 
Eigs. 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, perichsetium ; 13, 
vaginula ; 14, 15, pericluetial 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, portions 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, pericheetial 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. 
