— 167 — 
3. Adiantoidei. 
A. Leaves long sublinear or oblong-lanceolate more or less 
pellucid. Capsule large; pedicel long-exserted. 
6.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 subpercurrent. Stems 
us. erect and tufted, forming large mats, gen. radiculose below. 
— Rocks and earth common. Eur. Sweden, Switzerl. Amer. 
Can.: Macoun. 
*F.eristatus Wilson. — F. decipiens Notaris; Sulliv. 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.! Amer. Can.: Macoun. U. 8.: Sullivant, com. C. Mueller. 
*F.subtaxifolius Kindb. in bull. soc. bot. ital. 1896. 
. Leaves minutely serrate above, nearly entire below; costa 
pereurrent 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.K.errulatus 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 erowded, always large. Tufts 
. loose not radieulose. R. fruiting. — Earth and rocks r. Eur. 
. ltaly: Bottini. Portugal: Levier. 
8.F.polyphyllus 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: Sulliv. ic. muse. 
- Capsule piriform-elavate with very wide mouth, not strangu- 
late; lid shorter; teeth deeply cleft; pedicel as in F. serrulatus. 
- ves entire large densely 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). 
