II YPN El. 101 



pinnate; branches simple, erect, slender; leaves crowded, 

 spreading, subsqnarrose, subsccund, ovato-lanceolate, acumi- 

 nate, entire, nerveless ; sporangium oblong, curved, cernuous; 

 lid conical. Hook. $ Wils. t. Ivi. ; Eng. Bot. 1. 1709. ; (Moug. 

 Nest. n. 1032.) 



On walls and banks in limestone districts, from Yorkshire 

 to Wales. Bearing fruit in May. 



Monoicous; forming thin yellowish patches. Stems slen- 

 der, more or less subpinnate ; leaves crowded, rather squar- 

 rose, ovate with a sudden narrow acuminate tip, nerveless, en- 

 tire ; cells loose ; fruitstalk even, inch high ; sporangium 

 minute, oblong, curved, cernuous ; lid conical. 



A delicate species, smaller than the next, and with leaves 

 not so wide at the base. It is H. Sommerfelti of Schimper's 

 ' Synopsis/ 



40. H. chrysophyllum, End. ; stem prostrate, with distant 

 pinnae ; leaves crowded, subsquarrose, ovate or cordato-ovate, 

 acuminate, entire, mostly nerved more than halfway ; sporan- 

 gium subcylindrical, curved ; lid conical. Hook, fy Wils. t. 

 xxvi. ; Eng. Bot. t. 2671. ; (Plate 6, fig. 5) ; Moug. $ Nest. n. 

 731. 



In fallow-fields and marsh-lands occasionally from Cheshire 

 to Sussex. Sometimes on walls. Bearing fruit in summer. 



Dioicous ; forming golden-green patches. Stems creeping 

 or procumbent, distantly branched in a pinnate manner; 

 pinnse short, suberect ; leaves crowded, spreading widely, 

 squarrose, subsecund, ovate or cordate at the base, acuminate, 

 entire, nerveless or more frequently furnished with a nerve 

 reaching about halfway ; cells very narrow, not much enlarged, 

 as in the next, at the base ; fruitstalk even, an inch or more 

 long ; sporangium subcylindrical, curved, cernuous ; lid conical, 

 rather acute. 



