— 123 — 



at one side, subdecurrent, finally yellow at insertion; alar cells 

 subquadrate (larger than in Hypnum cupressiforme) often hyaline, 

 disposed on a short-triangular space, the others linear. Capsule 

 subcylindric us. nearly straight; lid rostrate or rostellate; pedi- 

 cel somewhat long. Tufts radical ose at least below, us. green 

 sometimes golden glossy. Stem irregularly divided; branches 

 sometimes compressed; paraphyllia numerous. Monoecious. — 

 Logs and stones in woods. Eitr. r. Switzerl.l France: Philibert. 

 Germany: Schimper. Amer. not r. Can.: Macoun; Moser; Wag- 

 horne. U. S.: Sullivant and Schrader, com. C. Mueller. 

 2.H.flaccum C. M. et Kindb. — Hypnum cat. Canad. m. 



Differs from the last: Leaves narrowei-, ovate-lanceolate; alar 

 cells larger. Stem subpinnate; branches cuspidate often com- 

 pressed. Dioecious. Capsules unknown. — Rocks and logs r. 

 Amer. Can.: Macoun; Moser; Waghorne. 



B. Leaves large, strongly serrate at acumen. 

 S.H.nemorosTim Koch. — Hypnum Koch. 



Leaves ovate-lanceolate, recurved below, crowded and not 

 decurrent, yellow at insertion; apical cells lanceolate, alar large 

 subquadrate hyaline or orange on a nearly round space; other 

 cells linear. Stem-leaves nearly entire below the subulate acu- 

 men. Branch-leaves denticulate above middle, with sublinear 

 somewhat broad half-twisted point. Capsule large suboblong 

 or arcuate; lid acute; pedicel long. Tufts pale green, sparingl}' 

 radiculose. Stem pinnate; branches cuspidate not compressed. 

 Monoecious. Habit of Calliergon euspidatum. — Trees and logs 

 in woods r. Eur. Germany: Milde. Amer. »U. S.»: Lesquereux. 



C. Leaves small, minutely denticulate at acumen. 

 4.H.pseudo-nemorosum Kindb. n. sp. 



Leaves ovate-oblong denticulate at the subulate acumen, not 

 distinctly recurved, decurrent, not yellow at insertion; alar cells 

 small few dusky on a short-triangular space; apical cells lan- 

 ceolate, the inner linear-lanceolate. Tufts glossy velvet-like. 

 Stem subpinnate; branches faintly compressed; paraphyllia broad 

 not numerous. Capsules unknown. Habit of Pylaisiella velutina. 

 — Amer. r. Can. N. Brunswick: Moser, com. Macoun. 

 5.H.siibadnatum C. M. et Kindb. — Raphidostegium cat. 

 Can. m. 



Leaves ovate-oblong short-acuminate acute, denticulate above 

 middle, recurved below, not decurrent; alar and lower marginal 

 cells quadrate, the others suboblong as in Amblystegium. Peri- 



