GYMNOSTOMUM. 89 



where very abundant, it is found generally over the country 

 and is plentiful on the Continent. 



15. Gymnostomum Donianum, Sm. {Donian Beardless 

 3I0SS.) Stem scarcely any ; leaves subulate ; capsule turbi- 

 nate ; lid hemispherical, with an acuminated point. — Engl, 

 M. p. 10. Seligeria Doniana, Mall. Sijn.pt. \. p. 420. 



Sandstone rocks. Discovered by the late Mr. Don in 

 the Den of Dupplin, in Perthshire, and subsequently in 

 similar situations in Scotland and the north of England. 

 It has also been found since in Norway and various dis- 

 tricts of Germany. Much resembling Weissia (Seligeria) 

 pusilla, which grows in similar localities. By Bruch and 

 Schimper it is made a separate genus — Anodus. 



16. Gymnostomum microstomum, Hedw. {Small- 

 mouthed Beardless Moss.) Leaves broadly subulate, their 

 margins involute above the middle, flexuose, crisped when 

 dry ; capsule elliptical, contracted at the mouth ; lid subulate, 

 incurved. — Engl. El. p. 10. Weissia microstoma, Miill. 

 Sijn.pt, \, p, 661. 



Banks, chiefly in subalpine districts. All writers on 

 Mosses refer to the great similarity existing between this 

 species and the common Weissia contraversa, bearing the 

 same relation to it that G, viridissimum does to the genus 



