— 304 — 



younger state; cilia yellowish narrower; calyptra not densely 

 hairy. Tufts green or yellowish green 2 — 4 c, m. high. — 

 On trees r. on rocks. Eur. not r. Sweden, Norway, Switzerl.! 

 Amer. r. Can.: Drummond 154. 



* O.Shawii Wilson. 



Capsule yellowish; teeth pale; ciUa unknown. Leaves with 

 shorter costa. Tufts dark green ] — 2 c. m. high. — On trees r. 

 Eur. Switzerl.! France: Philibert. 

 IS.O.exiguum Sullivant icon, muscor. 



Leaves small short gen. ovate-oblong, sometimes broadly ovate- 

 lanceolate or sublinear, obtusate or short-acuminate gen. obtuse, 

 often nearly wholly flat or slightly reflexed at borders; cells 

 gen. short; costa subpercurrent or shorter. Capsule oval faintly 

 striate when old; neck none or indistinct; cilia whitish broader 

 than teeth; calyptra nearly glabrous; stomata ? Tufts small 

 green about 0,4 c. m. high. Dioecious. — Base of trees r. 

 Amer. U. S. Nat. Park: Roell. 



III. Lyelhna Kindb. 



A. Capsule immersed; pedicel indistinct. Leaves neaily 

 appressed when dry not flexuous, with numerous propagula. 

 19.0.LyelIii Hooker et Taylor. 



Leaves narrowly ovate-lanceolate subulate-acuminate nearly 

 flat at borders. Capsule suboblong pale brown; ciha reddish; 

 calyptra sparingly hairy. Tufts dark green not high. Often 

 sterile. — On trees. Eur. not r. below alp. regions. Sweden, 

 Germany, Switzerl.! Greece: Orphanides. {Amer. »U. S.»: Lesq. 

 et Jam.) 



B. Capsule more or less emergent: pedicel distinct. Leaves 

 without propagula, the upper us. flexuous or crisped. 

 20.0.papillosuin Hampe. — 0. Pringlei C. M. 



Leaves as in the last but longer and recurved at least at 

 one side to the greater part, more papillose also below. Cap- 

 sule longer, subcyUndric brown and partly emergent. Stem us. 

 higher. Tufts us. yellowish or bright green. — Trees and rocks. 

 Amer. not r. Can.: Macoun. U. S. CaUf.: Mrs L. C. Feely. 



* O.strictum Venturi. 



Leaves dark green shorter, appressed when dry. — Amer. r. 

 Can.: Macoun. 

 21.0.1yenioide8 Kindb. revue bryol. 1896. 



Leaves long as in 0. papillosum, nearly flat or undulate at 

 borders, faintly papillose, not appressed when dry; the upper 

 crisped. Capsule narrow-cyhndric pale brown nearly wholly 



