— 167 — 



3. Adiantoidei. 



A. Leaves long sublinear or oblong-lanceolate more or less 

 pellucid. Capsule large; pedicel long-exserted. 

 G.F.adiantoides L. — Hypnum L.; Fissidens Hedwig. 



Capsule oval-oblong; lid nearly as long; teeth deeply cleft; 

 pedicel lateral. Leaves strongly serrate above, denticulate below, 

 often hyaline at margins, us. large; costa eubpercurrent. Stems 

 us. erect and tufted, forming large mats, gen. vadiculose below. 

 — Rocks and earth common. Eur. Sweden, Switzerl.l Amer. 

 Can.: Macoun. 



* F.cristatus Wilson. — F. decipiens Notaris; SuUiv. icon, 

 muse. 



Leaves more crowded and not much large, nearly entire be- 

 low. Stems us. ascending or decumbent, densely tufted. — 

 On rocks, less often on earth, nearly common. Eur. Sweden, 

 Switzerl.l Amer. Can.; Macoun. U. S.; Sullivant, com. C. Mueller. 



* F.subtaxifolius Kindb. in bull. soc. bot. ital. 1896. 



Leaves minutely serrate above, nearlj' entire below; costa 

 perourrent or subexcurrent. Stems (as in F. taxifolius) short 

 decumbent without rhizoids above base, not forming cohering 

 mats. Capsules not found. — On clayey earth. Eur. Switzerl. 

 near Lugano! 

 T.F.serrulatiis Bridel. 



Capsule subcylindric; lid shorter; teeth deeply cleft; pedicel 

 terminal on the stem or on short lateral branches. Leaves as 

 in F. adiantoides but more densely crowded, always large. Tufts 

 loose not radiculose. R. fruiting. — Earth and rocks r. Eur. 

 Italy: Bottini. Portugal: Levier. 

 S.F.polyphylliis Wilson. 



Differs from the last: Peristomial teeth cleft only to middle. 

 Leaves entire or near apex faintly denticulate or serrate. Stem 

 us. much longer. Very r. fruiting. — Wet shady rocks r. 

 Eur. France: Camus, com. Husnot. Engl.: Manchester Cryptog. 

 Society. 

 9.F.polypodioides Hedwig; Sulhv. ic. muse. 



Capsule piriform-clavate with very wide mouth, not strangu- 

 late; lid shorter; teeth deeply cleft; pedicel as in F. serrulatus. 

 Leaves entire large denselj'- crowded; costa subpercurrent. Stem 

 often long and simple, radiculose only at base. Differs from 

 the 3 preceeding species in annulus of capsule revoluble. R. 

 fruiting. — Wet rocks r. Amer. »U. S. southern states*: Sulliv. 

 (Venezuela: Fendler, com. C. Mueller). 



