24 BOTANICAL GAZETTE [JULY 
PLATE IV.—1. Barbula eustegia. a, entire plant, nat. size; 4, the same X 
3; ¢,¢, ¢,¢, leaves X 32; d, basal areolation X 135; ¢, areolation of the upper 
part X 135; /, external perichetial leaf x 32; £, inner perichetial leaf x 32; 
h, capsule X 32; 7, peristome X 60; 7, portion of a peristomial tooth x 285. 
—2. Grimmia pseudo-montana. a, entire plant, nat. size; 4, 6, leaves X 32; ¢, 
basal areolation x 135; d@, areolation of the upper part X 135; e, transverse 
section of the leaf in the lower part X 135; 4% transverse section of a leaf in 
the upper part X 135; g, capsule ripe X 26; 4, two teeth of the peristome 
Xx 135. 
PLATE V.—1. Orthotrichum Idahense. a, entire plant, nat. size; 4, 4, 
leaves X 32; c, basal areolation x 135; d, areolation in the upper part X 135; 
é, transverse section of a leaf X 135; 7 capsule'ripe and deoperculate, in dry 
State X 26; g, areolation of the capsular membrane in the upper part X 135; 
h, the same, in the lower part, showing a stoma X 135; z, two teeth of the 
peristome X 135; 7, young calyptra X 26.—2. Bryum euryloma. a, entire 
plant, nat. size; 4, leaf x 26; ¢, marginal areolation in the middle of a leaf 
%* 135; @, areolation of the upper part X 135; ¢, Capsule in dry state x I5. 
