^ MER aes 
branch-leaves ovate-oblong or ovate-lanceolate often long-acu- 
minate. Capsule suboval; lid conic mamillate. Stem red; pa- 
raphylia numerous. R. fruiting. — Earth and rocks prine. in 
alps gen. r. Hur. Norway, Switzerl.! Sweden: Hartman. Amer. 
Can.: Macoun; Waghorne. x 
B. Leaves denticulate or serrate all around. Branches not 
turgid. 
a. Leaves green; costa double. v: 
2.H.brevirostre Ehrhart. — Hypnum Ehrh.: Hylocomium | 
Br. eur. e. 
Stem with numerous paraphyllia.’ Leaves diversiform: an- 
gular cells small suboblong hyaline, the lower (special alar) 
brown somewhat large. Stem-leaves from very broad-cordate 
base abruptly tapering to a narrowly subulate acumen, brown 
at insertion, minutely denticulate. Branch-leaves serrate ovate- 
oblong gen. gradually acuminate. Perichetial leaves pale green 
abruptly narrowed to the dentate us. subulate, patent or de- 
flexed acumen, often serrate below it. Capsule oval-oblong 
curved; lid us. rostellate. — Earth, stone and trees. Eur. not 
r. Sweden, Germany, Switzerl.! Amer. r. Can.: Macoun; Mosér. 
U. 8: A. G. Wetherby. i 
8.H.calvescens Wilson. — Pleurozium Kindb. rev. bryol. 189 
Stem with few paraphyllia. Leaves uniform subdistant dei 
ticulate from cordate broad-ovate base gradually long-acuminate; 
angular cells large hyaline, only the lowest brown.  Perichetial 
leaves hyaline nearly gradually narrowed to the serrate falca: 
filiform-pointed acumen. Capsule suboval. curved; lid mamillate 
or subacute. Very. r. fruiting. Resembles the last and Hyp 
num squarrosum, from which it differs in leaves not falca 
when moist, shorter pedicel of capsule etc. — Earth in woods 
r. Eur. Sweden: Hj. Holmgren, com. M. Huss; Arnell; E. Ny 
man; P. Dusén. Norway: Zetterstedt. Finl: V. F. Brotherus. 
b. Leaves serrate sometimes brown-green; costa simple. Pa 
raphyllia few. 
4.H.striatum Schreber. — Hypnum Schreb.; Hylocomium 
Kindb. Laubm. Sehw. u. Norw.; Eurhynehium Br. eur. 
Leaves subdistant green very plicate when dry; alar cells 
few large subrectangular hyaline; costa vanishing in acumen 
Stem-leaves broad-ovate obtusate; branch-leaves acuminate nar- 
rower; perichetial hyaline with dilated celle, denticulate above 
middle of basal part. Capsule large arcuate finally blackish 
lid rostrate. Stem not decumbent; branches distant often attenuate. 
