— 77 — 



often very long. Branches often erect. Dioecious. — Wet 

 places. Amer.. Can.: Macoun. U. S.: Sullivant, com. C. Mueller. 

 6. A. serpens L. — Hj^pnum L.; Amblystegium Br. eur. 



Leaves narrower than in A. variuni, gen. smaller and less 

 chlorophj'llose, often entire; middle cells gen. suboblong; costa 

 faint more abbreviate. Stem-leaves narrowly suboblong-lanceo- 

 late, not much dilated at base; branch-leaves sublinear-lanceo- 

 late. Perichetial leaves long-acuminate. Capsule curved; annu- 

 lus compound; pedicel long. Stem decumbent. — Trees, logs 

 and stones gen. common. Eur. Sweden etc. I Amer. Can.: Ma- 

 coun; Waghorne. U. S.: Roell, com. Cardot. 



♦ A.ColiimbiaB Kindb. bull. Torr. club XVII. 



Leaves denticulate all around, nearly spreading; cells oblong- 

 lanceolate; costa sometimes reaching into acumen. Perichetial 

 leaves short-acuminate. Habit of Campylium. — Wet logs r. 

 Amer. Can. Brit. Col.; Macoun. 



3. Speirophylla. 



A. Leaves with subpercurrent costa. Capsules unknown. 

 7.A.speirophyHiiin Kindb. in Ottawa Naturalist IV. 



Leaves obtusate subacute or short-acuminate, subcordate or 

 oval-oblong, entire or slightly denticulate; cells suboval; costa 

 gen. thin. — Rocks r. Amer. Can. N. Brunsw.: Moser. U. S.: 

 Roell. 

 S.A.distantifolium Kindb. cat. Canad. m. 



Leaves ovate-lanceolate long-acuminate serrulate all around, 

 chlorophyllose and sometimes subdecurrent; cells suboblong; 

 costa thick sometimes subexcurrent. — Rocks r. Amer. N. 

 Foundl: Waghorne. 



B. Leaves with short often obsolete costa. 

 a. Leaves narrow gen. acute. 



9.A.Sprucei Bruch. — Hypnum Bruch; Amblystegium Br. eur. 

 Leaves narrowly ovate-oblong or sublinear gen. long-acuminate 

 entire; cells oval oblong; costa gen. indistinct. Perichetial leaves 

 coarsely dentate above. Capsule suboblong-piriform or finally 

 turbinate; teeth pale; lid subobtuse. R. fruiting. Dioecious. — 

 In caverns of rocks or in swamps princ. in alps, often mixed 

 with an hepatic {Blepharosfoma trichophyllum). Eur. Sweden, 

 Norway! Amer. Can.: Macoun. 



* A.minutissimum Sullivant et Lesquereux. — Hypnum Sulliv. 

 icon. muse. 



Leaves more distinctly depticulate; costa often distinct. Tufts 

 less loose, »Sometimes monoecious»: Sulliv. 1. c, — Amer. 



