— 55 — 



Perifhetial leaves costate hyaline, pale 3'-ellow at base. Capsule 

 suboval; teeth orange; segments split; cilia appendiculate; lid 

 short-beaked; pedicel rough. — Rocks also in alp. region. Amer. 

 Pacif. distr. Alaska: J. M. Macoun. Can.: J. Macoun. 



B. Leaves, at least those of branches, without distinct hair- 

 point. Stem creeping subpinnate or bipinnate. 

 2.T.leuconeuron SulUv. et Lesquer.; Sull. icon, muscor. 



Leaves approached when moist, smaller than in the last; 

 cells round-oval. Stem-leaves ovate-lauceolate subulate or broad- 

 ovate obtuse with filiform point. Perichetial leaves nerveless. 

 Capsule small suboval; teeth pale; segments split; cilia nodose; 

 annulus large; lid with short thick often curved beak; pedicel 

 smooth. Tufts green. — Trees and rooks r. Amer. Pacif. distr. 

 r. Can.: Macoun. U. S.: Marshall A. Howe; Boleender, com. 

 C. MueUer. 

 S.T.Whipplei Sullivant. — Hypuum Sull.; Thuidium Kindb. 



Differs from the last: Leaves larger longer narrower and more 

 distant; cells suboblong. »Pedicel of capsule rough; annulus 

 none; perichetial leaves costate »: Lesq. et Jam. — Eocks r. 

 Amer. Pacif. distr. Can.; Macoun. 



II. Pseudo-Claopodium Kindb. 

 4.T.laxifolium Schwsegrichen. — Hypnum Schw.; Thuidium 

 Kindb. 



» Leaves denticulate. Stem-leaves from ovate base short-acu- 

 minate; branch-leaves ovate. Capsule globose-ovate; cilia short; 

 lid obliquely rostellate; pedicel rough. — Earth r. Amer. 

 Northwest coast: Menzies»: C. M. syn. 



S.T.pseudo-pygmaeum Kindb. (new name). — Hypnum pyg- 

 mseum Schimper, non Taylor; Sulliv. icon, muscor.; H. remo- 

 tifolium Greville? 



Leaves entire opake short-acuminate very small; those of 

 stem ovate-oblong, those of branches somewhat longer; costa 

 often exourrent. Capsule very small suboval; cilia short; lid 

 rostrate; pedicel smooth. Stem pinnate or bipinnate. — Wet 

 rocks r. Amer. U. S.: Austin, com. Macoun. 



III. Micro-Thuidium Kindb. (in check-list). 



A. Leaves crisped when dry; cells rotundate. Paraphyllia 

 numerous. Monoecious. 

 e.T.minntulum Hedwig. — Hypnum H.; Thuidium Br. eur. 



Leaves entire subovate opake; costa not exourrent. Stem- 

 leaves us. short-acuminate; branch-leaves obtuse shorter; costa 

 faint. Capsule small suboblong horizontal; cilia long; lid 



