116 HANDBOOK OF BRITISH MOSSES. 



pinnate ; stem-leaves squarrose, broadly cordate, acuminate ; 

 sharply toothed, two-nerved, subplicate ; branch-leaves spread- 

 ing, subsecund, ovato-lanceolate, sometimes nerveless ; para- 

 phylla lanceolate, toothed ; fruitstalk rough ; sporangium oval, 

 cernuous ; lid convex, apiculate. Hook, fy Wils. t. Ivii. ; Eng. 

 Bot. t. 2565. ; (Plate 9, fig. 5) ; Moug. 8f Nest. n. 1225. 



On rocks in mountainous districts, principally near water- 

 falls, Lancashire, Ireland and Wales. Bearing fruit, but 

 rarely, in early winter. 



Dioicous ; forming soft green or at length yellowish-green 

 tufts or patches. Stems short (at least in the fertile plant), as- 

 cending, arched, proliferous, slightly divided; branches pinnate; 

 branchlets often curved, elongated and rooting at the tips ; 

 stem-leaves broadly cordate, acuminate, serrated, more or less 

 plicate, two-nerved at the base where the cells are large ; para- 

 phylla lanceolate, sharply toothed ; branch-leaves narrow, less 

 squarrose, and acuminate, often nerveless; perichsetial leaves 

 with a long rough hair-like tip ; fruitstalks very rough, 1 inch 

 long, red; sporangium elliptic, swollen, curved, cernuous; lid 

 convex, with a distinct acute apiculus. 



The fertile plant is always shorter than the sterile, which is 

 often much elongated, especially when growing in water. 

 Wilson does not mention the paraphylla, but I find them in 

 specimens gathered by himself at Aber. 



Sect. II. Leaves seeund. 

 A. Stem pinnate, more or less erect, fructification near the middle; 



leaves falcato-secund. 



* Leaves nearly entire ; nerve reaching lialfway or more, 

 rj. HYPNUM, ScMmp. 



62. H. Kneiffii, Schimp.; dioicous ; stem ascending ; branch- 

 lets subpinnnate; leaves distant, subsecund, cordato-lanceo- 



