= FP — 
often very long. Branches often erect. Dioecious. — Wet 
places, Amer. Can.: Macoun. U. S.: Sullivant, com. C. Mueller. 
6.A.serpens L. — Hypnum L.; Amblystegium Br. eur. 
Leaves narrower than in A. varium, gen. smaller and less . 
chlorophyllose, 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.! Amer. Can.: Ma- 
coun; Waghorne. U. S.: Roell, com. Cardot. 
*A.Columbie 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. 
9. Speirophylla. 
A. Leaves with subpercurrent costa. Capsules unknown. 
7.A.speirophyllum Kindb. in Ottawa Naturalist IV. 
Leaves obtusate subacute or short-acuminate, subcordate or 
oval-oblong, entire or slightly denticulate; cells suboval; costa 
i thin. — Rocks r. Amer. Can. N. Brunsw.: Moser. U. $.: 
ll. 
8.A.distantifolium Kindb. cat. Canad. m. 
Leaves ovate-lanceolate long-acuminate serrulate all around, 
s chlorophyllose and sometimes subdecurrent; cells suboblong; 
costa thick sometimes subexcurrent. — Rocks r. Amer. N. 
. Foundl: Waghorne. ; 
B. Leaves with short often obsolete costa. 
. . &. Leaves narrow gen. acute. : 
9-ASprueei 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 (Blepharostoma trichophyllum). Eur. Sweden, 
* Norway! Amer. Can.: Macoun. : 
. *Aminutissimum Sullivant et Lesquereux. — Hypnum Sulliv. 
.. Kon. musc. 
d ., Leaves more distinctly denticulate; costa often distinct. Tufts 
ld loose, »Sometimes monoecious»; Sulliv. l e — Amer, 
