GRIMMIEI. 231 



ferous leaves which are not dilated below. The diaphanous 

 cells moreover are absent at the base, with the exception of a 

 single row at the margin. I have not had an opportunity of 

 examining this species myself. 



Obdee XXIII. PTYGHOMITBIEI, Br. & Schimp. 



Sporangium without a tapering apophysis, adnate with the 

 walls ; veil smooth, furrowed, its apex subulate ; primary teeth 

 not more than sixteen; leaf-cells punctiform, not papillose; 

 ocrea wanting. 



72. PTYCHOMITEITJM, Br. $ Schimp. 



Sporangium regular, slightly tapering below, but without 

 any apophysis; veil mitriform, deeply furrowed, subulate 

 above, laciniate below ; peristome single, of sixteen inarticulate 

 deeply-divided teeth ; leaf-cells of the upper half and margin 

 subquadrato-punctiform, arranged in lines, of the disk and of 

 the lower half narrow elongated. 



1. P. polyphyllum, Br. fy Schimp.; tufted ; leaves spreading, 

 linear-lanceolate, ovate at the base, crisped when dry, toothed 

 at the apex, acute ; sporangium elliptic. — Hook, fy fVils. 

 t. xix.; Eng. Bot. t. 1217.; (Plate 21, fig. 1); Moug. Sf 

 Nest. n. 410. 



Rocks and walls in alpine or subalpiue districts. Common. 

 Bearing fruit in spring. 



Forming loose dense tufts. Leaves keeled ; nerve reaching 

 to the toothed apex; leaf-cells nearly as in Ulota. Fruit 

 abundant; fruitstalk elongated; lid subulate ; sporangium 

 pale; teeth sixteen, deep-red, deeply cleft, inarticulate; lid 

 subulate. 



