106 



near the apex, often cucullate at the apex. Capsule oblong cylindrical 

 - horizontal. Seta long. Tufts tall, loose, green, erect or prostrate. 

 Habitat-swamps, brooks, wet meadows. Mature in summer. 

 C Schreberi. 



Leaves close, imbricated, slightly plicate oval-oblong, very concave, 

 entire. Costa short, doable or faint. Apex round or obtuse, incurved. 

 Seta long. Capsule horizontal. Stems woody and erect and red. Tufts 

 large, glossy or yellow green. Found in shaded woods on humus, logs or 

 ground. Mature in autumn. 

 Campylium. 



Campylium species are charactc>rized by strongly squarrose leaves. 

 Branching irregular. Leaves lanceolate, long-acuminate, decarrent, 

 costate or ecostate. Capsule horizontal. 

 C. chrysophylhim. 



Stems prostrate with erect or sub-erect branches, which are pinnate. 

 Leaves strongly costate, faintly secund, entire or slightly denticulate at 

 base. On ground or rocks. Mature in summer. 

 C. hispidulum. 



Ecostate or costa short and double. Leaves close, squarrose, sub- 

 secund, base cordate ovate. Apex very long acuminate. Plants slender. 

 Branches pinnate, erect. Tufts dense, yellow-green. Foimd about the 

 roots of trees and on stones. Mature in summer. 



CiRRIPHYLLUM. 



C. Boscii. 



Plants julaceous, large robust, bright yellow-green. Leaves costate, 

 serrate acuminate, imbricate, apex twisted to a filiform point, concave, 

 oblong ovate, costate to middle or beyond. Mature in autumn. 

 Climacium. 



This genus is characterized by its exceedingly large size. Their general 

 habit is tree-like. Leaves acute, serrate, oblong lanceolate, usually 

 decurrent. Leaves often variable. Capsules clustered, oblong-cylindric, 

 erect. Seta long, smooth. The stem underground. Habitat, wet 

 places, swamps, in deep shady woods. Mature in autumn. 



It is difficult to distinguish species without a microscope. Our two 

 most common forms, are C. Americanum, with a habit like a miniature 

 tree; and C Kindbergii, which grows in a looser, more tangled mass. 

 Cratoneuron. 



C. filicinum. 



Plants medium size, pinnately branched, with numerous paraphj'llia 

 and dense radicals. Leaves cordate, falcate secund, decurrent, plicate. 

 Operculum conic. Seta long. Mature in spring or summer. 

 Ctenidium molluscum. See Hypnum molluscum. 



DiCHELYMA. 



D. capillaceum. 



This genus is strictly aquatic, leaves long, narrow, floating. Leaves 

 costate, entire, acuminate. Stem often denuded of leaves. Branches 

 curved at the ends, often twisting about their hosts in the water. Mature 

 in summer. Dichelyma resembles FontinaUs but differs in that Diche- 

 lyma is costate, FontinaUs is not. 



