HVl'NKI. 11] 



ruptedly bi-tripinnate, villous ; leaves imbricated, ovate or 

 elliptic, concave, pointed, serrated, two-nerved at the base, 

 where the margin is reflected ; sporangium ovate, cernuous ; 

 lid rostrate. Hook. $ Wils. t. xxv. ; Eng. Bot. t. 1424.; 

 (Plate 9, fig. 1) ; Moug. % Nest. n. 42. 



On the ground, in woods, etc. Common. Bearing fruit, 

 but rarely, in April. 



Dioicous ; forming loose tufts several inches in length. 

 Stems with frequent and often repeated innovations, which 

 are bi-tripinnate ; leaves glossy, elliptic, smooth, those of the 

 stem with a long point, those of the branchlets pointed but 

 blunt, serrated, two-nerved at the base, where the margin is 

 reflected; fruitstalks generally two or three together, even, 

 about an inch long ; sporangium ovate, cernuous ; lid large, 

 rostrate. 



A noble species, sometimes attaining the Iqngth of a foot, but 

 bearing fruit rarely in the southern counties. In the south of 

 Europe it is alpine and subalpine, but proceeding northwards 

 it descends to the plains. 



55. H. umbratum, Ehr. ; stem suberect, irregularly bipin- 

 nate, clothed with branched paraphylla; leaves cordate or 

 ovate, acuminate, sharply toothed, more or less plicate ; nerve 

 often forked ; fruitstalk even ; sporangium ovate, cernuous ; 

 lid conical, acute. Hook, fy Wils. t, Ivii. ; (Moug. fy Nest. n. 

 329.) 



In alpine woods, rare. Scotland. Bearing fruit in winter. 



Dioicous ; forming loose yellowish tufts. Stems more or 

 less regularly bi pinnate, producing innovations as in the last, 

 clothed with numerous, branched paraphylla, the ultimate 

 divisions very acute ; leaves rather distant, spreading} smooth, 

 glossy, those of the stem broadly cordate, deeply plicate, those 

 of the branches ovate or ovate-oblong, striate, sharply ser- 



