HYPNUM. 267 



70. Hypnum cupressiforme, Linn. {Ci/press-Ieaved 

 Feather 3Ioss.) Leaves closely imbricated^ more or less fal- 

 cato-secund, lanceolate, acuminate, entire, except at the 

 points, Avliicli are usually serrated very faintly, two-nerved at 

 the base ; capsule cylindrical, erecto-cernnous ; lid conical, 

 with a point.— ^;?y. Fl. p. 95; j\ML Sijit.pt. 2./;. 289. 



Banks, wall-tops, woods, stems of trees, and various other 

 localities, common. Fr. Autumn and Winter. We believe 

 this common but elegant Moss will be well known to the 

 youngest tyro. Though a very variable species, its usual 

 form will easily be distinguished after a little observation 

 from allied species. It is a species so widely distributed 

 that Miiller says it may be regarded as " cosmopolitan in its 

 habits among Pleurocarpous Mosses, as Bldijmodon purpu- 

 reus is among the Acrocarpous." The two leading varieties 

 enumerated by Hooker are 



Var. compresmm, with stems slender, compressed; leaves 

 falcato-secund ; growing in shady woods. 



Var. fenne, leaves very slightly curved, narrow lanceo- 

 late, quite entire ; mostly on trees. 



71. Hypnum Crista-castuensis, Linn. {Ostrich-plume 

 Feather Moss.) Stems closely pectinated; leaves falcato- 

 secund, ovato-lanceolate, acuminate, serrulate, striated. 



