716 348 . Gymnostomum. 14 . MUSCI. PLcell.fol. 
On mountains and barren pastures ; winter and spring. 
Abundant on the walls of Jerusalem. 
1 1 . Gymnostomum pyriforme . Pear shape plain-mouth. 
Leaves ovate, pointed, concave, serrated, not bordered ; 
capsule roundish, ovate ; lid convex, beaked, beak short. 
Bryum parvura, erectis piriformibus majusculis capitulis, foliis serpilli 
pellucid is, Rail Syn . 93, 7. 
Bryum pyriforme, Lin. S. P. 1580. 
Gymnostomum pyriforme, Hedw. Sp. 38 ; Engl. Bot. 413. 
On wet banks and sides of ditches ; winter and spring. 
12 . Gymnostomum tenue. Slender plain-mouth. 
Stem scarcely any; lower leaves very short, ovate, lan- 
ceolate ; upper linear, lanceolate ; all upright, blunt ; main 
rib strong, not reaching the point. 
Bryum paucifolium, Dicks. Crypt. 4,7. 
Gymnostomum tenue, Hedw. Sp. 4,1. 
Gymnostomum paucifolium, Engl. Bot. 2506. 
Dicranum cylindricum, Smith FI, Brit. 1221. 
On sandstone rocks and ruins. 
13 . Gymnostomum Donnii, Bonn's plain-mouth. 
Stem very short ; leaves awlshape, straight ; capsule top- 
shape. 
Gymnostomum Donnianum, Engl. Bot. 1582. 
On rocks. 
Appearance very similar to that of weissia calcarea. 
14 . Gy mnost. microstomum. Small-mouth plain-mouth. 
Leaves broad, awlshape, edge turned in above, bent, 
crisped when dry; capsule elliptical, contracted at the 
mouth ; lid awlshape, bent. 
Gymnostomum microstomum, Hedw. Sp. 33 ; Engl. Bot. 2215. 
Gymnostomum rutilans, Hedw. Sp. 3. 
Gymnostomum tortile, Schwcegr. Suppl . 10. 
On banks. 
Very like weissia controversa, but distinguishable by the 
mouth of the capsule, and short pedicell. 
VII. 349 . DIPHYSCIUM. Double-hunch. 
Capsule valveless, gibbous, pedicelled ; pedicell terminal ; 
peristome single, membranaceous, conical, truncated, plaited; 
calyptra mitreshape. 
