— 400 - 



pillose 0,05 — 0,07 m. m. 7— Eur. not r, Sweden: Hamnstrcem. 

 Austria: Schmidt. France: Berthoumieu. Amer. »U. S.»: Lesq. 

 et Jam. ■ 

 * E.praecox Walther et Molendo. — E. intermedium Mitten. 



Leaves faintly costate in upper half. — Eur. r, »En^l.»: 

 BraithTvaite. 

 2 E.minutissimura Lindberg. 



Leaves narrowly lanceolate long-acuminate. Spores nearly 

 smooth smaller than in the last. — Eur. r. »Engl.»: Braith- 

 waite. Amer. Can.: Macoun; Drammond n. 10. 



B. Leaves nearly entire; upper cells narrow. 

 B.E.stellatnm Philibert. 



Leaves from subovate base abruptly narrowed to a long subu- 

 late acumen. Spores smooth 0,04 — 0,05 m. m. — Eur, r. 

 France: Philibert. 



2. Costa ta. 



A, Leaves from broader base gradually subulate. 



a. Leaves nearly entire. Calyptra campanulate. 

 4.E.sessile Br. eur. -^ Phascum Br. eur.; Ephemerum C. M; 

 E. stehophyllum Schimper; Braithwaite. 



Leaves with long-excurrent costa; cells somewhat narrow 

 nearlj^ uniform. Capsule sessile; columella rudimentary. Spores 

 0,06 — 0,08 m. m. — - Eur. r. France: Camus; Philibert. Amer. 

 »U. S.»: Lesq. et Jam. 



b. Leaves serrulate nearly all around. Calyptra subcucul- 

 late split at one side. 



5.E.crassinerve Schwsegrichen. 



Leaves with smooth not excurrent costa; cells rectangular 

 nearly uniform. Capsule very short-pedicellate; columella com- 

 plete. — Described to figures in icones muscorum by SuUivant; 

 his own description not is agreeing. ^- Moist clay ground. 

 Amer. »U. S. common*: Lesq. et Jam. 

 G.E.spinnlosnm Bruch et Schimper. 



» Differs from the last in leaves narrower; costa excurrent 

 into a long hyaline spinulose arista. — Amer. Same locality 

 as the preceeding»: Lesq. et Jam. 



B. Leai'es from long base abruptlj' narrowed to a shorter 

 often deflexed acumen, more or less serrate above middle. 



a. Calyptra cucullate. Costa of leaves excurrent. 

 T.E.recurTifolinm Dickson. — Phascum Dicks.; Ephemerum 

 Boulay; Ephemerella Schimper; E. pachycarpa C. M. 



Leaves sublinear-lanceolate often somewhat long-acuminate, 



