— 91 — 



Perichetial leaves long-acuminate with filiform point. Capsule 

 curved; lid mamillate. — Shaded rocks r. Anier. Pacif. distr. 

 Can.: Macoun; Roell. U. S.: Bolsender, com. C. Mueller. 

 15.C.arenariiim Lesquereux. 



Differs from C. aureum: Stem-leaves more distinctly recurved; 

 branch-leaves serrate above. Branches less crowded us. straight. 

 Tufts dirty yellowish. — Sandy ground r. Amer. Pacif. distr. 

 Can.: Macoun. U. S.: Bolsender, com. C. Mueller and Renauld. 



b. Leaves long narrow somewhat large. Capsules unknown. 

 16.C.sericeoides C, M. et Kindb. cat. Canad. m. 



Leaves long-acuminate subulate; those of branches denticulate 

 at acumen, entire below; inner cells linear. Perichetial leaves 

 serrate to below middle, gradually acuminate subulate. Stem 

 not creeping; branches curved. — Rocks r. Amer. Can. Brit, 

 Col.: Macoun. 



Bi Leaves small and, at least on those of branches, denti- 

 culate gen. all around. Branches crowded and us. curved. 



a. Leaves long narrow gradually long- acuminate. Stem pin- 

 nate. 



IT.C.Nuttallii Wilson. — Hypnum Wils.; Sull. ic. muse; 

 Camptothecium Schimper. 



Leaves subulate-acuminate decurrent, broadly recurved often 

 to middle, minutely serrulate above to below middle, stronger 

 dentate at base; inner cells linear. Capsule narrowly ovate- 

 oblong, slightly curved; teeth orange; segments long or short; 

 cilia rudimentary; lid apiculate or rostellate. Stem us. cree- 

 ping; branches short. Tufts us. golden glossy. Sometimes 

 pseudo-monoecious. — On trees and logs, r. on rocks. Amer. 

 Pacif. distr. r. Can.; Macoun Canad. musci n. 280. U. S.: Roell; 

 Bolsender, com. Renauld. 

 IS.C.hamatidens Kindb. bull. Torr. club XVI. 



Differs from the last: Leaves sharply hooked-dentate at base 

 and at acumen, nearly entire in middle. Capsule subovate; 

 segments long split in two divergent legs; cilia distinct. Stem 

 nearly eradiculose with often long branches. Tufts often green 

 and silky gloss}'. — On rocks r. on trees. Amer. Pacif. distr. 

 less r. Can.: Macoun. U. S.: Roell and Miss Mann, com. Cardot. 



b. Leaves short and broad. 

 aa. Stem pinnate radiculose. 



19.C.leucodontoides Kindb. revue bryol. 1895. 



Stem-leaves from short-triangular (subcordate or broad-ovate) 

 base abruptly narrowed to a long falcate subulate filiform- 



