1^0 COMMON CANADIAN WILD J' LA NTS. 



the rhauhis. Rhachis and pinn.u usually with bulblets 

 Pinnules toothed. Shady, moist ravines. 



2. C. fra'gilis, Bernh. Frond only 4-8 inches long, with .1 

 stipe of the same length, twice- or thrice-pinnate. 1-ihacliix 

 winyed. Shady cliffs. 



13. STRUTHIOP'TERIS, Willd. OsTiucn FERN. 



S. German'ica, Willd. (OrnxkaStruthtopteris^HoS.) Steriii: 

 fronds with the lower pinna? gradually much shorter than the 

 upper ones. Pinnse deeply pinnatifid. Common in low, wet 

 grounds along streams. 



13. ONOCXE'A, L. SENSITIVE FERN. 



0. sensib'ilis, L. (See Figs. 266, 267, 268 and 269, and 

 accompanying description.) Common in wet grounds along 

 streams. 



14. DICKSO'NIA, L'Her. DICKSONIA. 



D. punctilo'bula, Kunze. Pleasantly odorous. Moist, 

 shady places. 



15. OSMUN'DA, L. FLOWERING FEKN. 



1. 0. rega'lis, L. (FLOWERING FERN.) Fronds twico-pin- 

 nate, fertile at the top, very smooth, pale green. Sterile pinnules 

 oblong-oval, finely serrate towards the apex, 1-2 inches long, 

 either sessile or short-stalked, usually oblique and truncate at the 

 base. Swamps, along streams and lake-margins. 



2. 0. Claytonia'na, L. Fronds large, once-pinnate, pale 

 groen, densely white-woolly when unfolding from the bud, tr/lk 

 fertile pinna among the sterile ones. Pinnse deeply pinnatitid, 

 the lobes entire. Low grounds. 



3. 0. cinnamo'mea, L. (CINNAMON FERN.) Fertile from I. s 

 distinct from the sterile ones, contracted, twice-pinnate, covered 

 with cinnamon-coloured sporangia. Sterile fronds rusty-woolly 

 when young, smooth afterwards, once-pinnate, the piuiue deeply 

 pinnatifid. The long, sterile fronds in a cluster, with the fertile 

 ones in the centre. Low grounds. 



10. BOTRYCH'IUAI, Swartz. MOONWORT. 



1. B. Virgin'icum, Swartz. (See Figs. 270 ami L'71, and 

 accompanying description.) Rich woods everywhere. 



