— 134 — 
IV. Rhytidium Sullivant. 
26.H.rugosum Ehrhart. zi 
Leaves large denticulate nearly all around from. subovate 
base gen. long-subulate; costa vanishing near or above middl 
Capsule subcylindric arcuate; teeth ferruginous; lid acute or 
rostellate; pedicel not long. Tufts loose, brown below, golden 
glossy or greenish above. Branches subjulaceous very thick. 
Dioecious r. fruiting. — Dry earth and rocks. Eur. common | 
in alps, r. in lower districts. Norway fruit., Switzerl.! Ger. 
many fruit.: Schimper. Amer, Can.: Macoun; Waghorne. 
V. Pseudo-Hylocomium Kindb. 
A. Angular leaf-cells large numerous hexagonal-oval. 
27.H.squarrosum L, — Hylocomium Br: eur. Be 
Leaves minutely denticulate all around from ovate base long- | 
acuminate; angular cells sometimes brown... Perichetial leaves - 
pale yellow gradually acuminate filiform-pointed, serrate above 
middle of the basal part. Capsule broad-oval or obovate or - 
curved us. not large; teeth brown-yellow; cilia often appendi- 
culate; lid acute; pedicel very long. Stem eradiculose r. pin- 
nate. Tufts us. dirty greenish. — Humid meadows. Eur. gen. 
common below alp. regions. Sweden, Switzerl.! Amer. not 
Common. Alaska: J. M. Macoun. Can. J. Macoun, U. 8. 
Roell (forma subpinnata). He 
B. Angular leaf-cells suboblong small not well-defined. 
28.H.loreum L. -- Hylocomium Br. eur. Hagi 
Leaves from ovate base long-acuminate. 
below middle; branch-leaves 
Perichetial leaves hyaline, slig 
large oval or subglobose; teet 
pedicel long. Stem often ve 
radiculose. — Earth and rocks prine. near sea or larger lakes 
not r. Hur. Sweden, Norway, Germany! Amer. Alaska; J. M. 
Macoun. Can.: Macoun; Dawson. ii 
29.H.robustum Hooker, — Hylocomium Flemmingii Austin. 
Leaves ovate short acuminate denticulate, rugose when dry, 
larger than in the both last and less curved; the younger 
narrower, the elder often covered by hair-like rhizoids. Capsule 
large subobovate oblique or slightly curved; teeth yellow oF 
finally ferruginous; lid conic obtuse; pedicel shortish. Stem 
suberect; branches few distant very thick us. green. Habit of 
Hypnum rugosum but larger. — Earth in woods r. Amer. 
western slope. Can.: Macoun. U.S: Leiberg, com. Mrs Britton. 
Stem-leaves en 
