716 348. Gymnostomum. 14. MUSCI. Pl. cell. fol. 
On mountains and barren pastures; winter and spring. 
- Abundant on the walls of Jerusalem. 
11. Gymnostomum pyriforme, °/°Pearshape plain-mouth. 
Leaves ovate, pointed, concave, serrated, not bordered ; 
capsule roundish, ovate ; lid convex, beaked, beak short. 
Bryum parvun, erectis piriformibus majusculis capitulis, foliis serpilli 
pellucidis, Raii 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; maz 
7ib 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 Fl, Brit. 1221. 
e 
On sandstone rocks and ruins. 
13. Gymnostomum Donnit. Donn’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. Gymnost. 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. 
Gymnostoinum microstomum, Hedw. Sp. 33; Engl. Bot, 2215, 
Gymnostomum rutilans, Hedw. Sp. 3. 
Gymnostomum tortile, Schwegr. 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. 
