— 67 — 



B. Leaves crowded decnrrent; alar cellfi large hyaline. Lid 

 of capsule long-conic acute or short conic rostellate. 

 5.R.membranosum Kindb. — Plagiothecium cat. Can. m. 



Leaves flat ovate-oblong acute or short-actiminate, entire or 

 above middle denticulate, patent or spreading; cells linear exc. 

 the alar. Capsule cylindric or obovate arcuate, not constricted; 

 teeth yellow; pedicel not long. Tufts dense glossy green, not 

 or sparingl}'' radiculose. Dioecious. — Logs in swamps r. Amer. 

 Can.: Macoun; White. 



II. Pseud-Eurhynchium Kindb. 



A. Leaves crisped when dry; cells much dilated. 

 e.R.rotundifoliiim Scopoli. — Hypnum Scop.; Rhynchostegium 

 Br. eur. 



Leaves somewhat distant, not decurrent; costa vanishing near 

 middle. Stem-leaves ovate gradually short-acuminate, nearly 

 entire; cells suboblong, alar not defined. Branch-leaves shorter, 

 broad-ovate abruptly short-acuminate, minutely denticulate all 

 around; cells oval. Capsule suboval not large; lid rostrate; pedicel 

 short smooth. Stem creeping. Tufts green. Monoecious. — 

 Stones r. Eur. south, districts. Switzerl., Italy! 



B. Leaves not crisped; cells gen. narrow. 



a. Leaves distant; alar cells large. Lid of capsule not ro- 

 strate. 

 7.E..revelstoliense Kindb. — Eurhynchium note on Can. bryol. 



Leaves ovate-lanceolate long-subulate denticulate plicate and 

 pellucid, sometimes short-decurrent; cells lanceolate exc. the 

 alar; costa somewhat thick, vanishing above middle or shorter. 

 Capsule arcuate; lid rostellate; pedicel short smooth. Stem 

 creeping subpinnate or irregularly divided. Tufts pale or light 

 green. Male flowers not found. — Logs r, Amer. Can. Brit. 

 Col.: Macoun; N. Foundl.: Waghorne. 

 S.R.pseudo-serrulatum Kindb. — Eurhynchium Kindb. 1. c. 



Leaves ovate or ovate-oblong, minutely denticulate, striate 

 and chlorophyllose, not or indistinctly decurrent; cells lanceolate, 

 the lower shorter and more dilated; costa thin vanishing above 

 middle. Stem-leaves with short-acuminate or filiform-pointed; 

 branch-leaves with short subulate sometimes twisted point. 

 Capsule arcuate; lid apiculate; pedicel rough very long. Stem 

 subpinnate or irregular!}^ divided. Tufts dark green, faintly 

 glossy, radiculose at base. Monoecious. Habit of R. serrulatum. 

 ■ — Earth and stones in woods r. Amer. Can.: Macoun; Moser; 

 Waghorne. U. S. New Jersey: com. Macoun, 



