ISOTHECTT. 141 



up the lid, which is attached to it (systylous) ; outer teeth nar- 

 row, confluent at the base, reddish ; inner yellow. 



A fine species, but seldom in fruit, as the male plants often 

 grow completely detached, though sometimes they accompany 

 the female. 



15. CYLINDROTHECIUM, Br. % Schimp. 



Sporangium cylindrical, erect; peristome double, inserted 

 below the orifice; inner peristome of 16 narrow teeth without 

 intermediate cilia; stem pinnato-ramulose; cells narrow, elon- 

 gated except at the angles. 



1. C. Montagnei, Br. ty Schimp. ; branches recurved, acute ; 

 leaves imbricated, erecto- patent, ovate or ovato-oblong, sub- 

 acute, entire, faintly two-nerved ; sporangium cylindrical ; 

 lid conical. Hook, fy Wils. t. liv. ; Mont. Ann. d. Sc. Nat. 

 ser. 2, v. 20, t. 15. ; (Moug. Nest. n. 1229.) 



On rocks and hills. Occasionally from Scotland to Sussex. 

 Often perhaps confounded with Hypnum Schreberi. Bearing 

 fruit on the Continent in autumn. 



Dioicous ; forming pale broad yellow-green patches, ochra- 

 ceous below. Stems pale, pinnate, the branches, short, re- 

 curved, and acute; leaves imbricated, especially when dry, 

 elliptic, ovate, or ovato-oblong, shortly pointed, entire, with two 

 faint nerves or nerveless ; margin recurved at the base, where 

 the cells are shorter; sporangium cylindrical; lid conical. 



It may be known at once when barren from H. Schreberi by 

 the pale not deep red stem, and the more pointed branches. 



16. PYLAISIA, Schimp. 



Sporangium erect, symmetrical; orifice narrow; peristome 

 double, outer inserted far below the orifice, intermediate cilia 

 absent or only rudimentary ; stem pinnate ; leaf-cells narrow, 

 except at the angles, where they are quadrate. 



