82 REVUE BRYOLOGIQUE 
5. Plourczium calvescens Wils.; Hylocomium Wils.; 
Pleurozium Kindb.; Hylocomium subpinnatum Lindberg ; 
H. squarrosum (var.) Schp. 
Nearly allied to P. brevirostre (Ehrh.) Kindb. Leaves 
green, from the broad-ovate and cordate base gradually 
long-acuminate, denticulate all around, subdistant, not 
falcate ; angular cells dilated and hyaline, only the lowest 
ones brown ; costa double. Perichetial leaves hyaline, 
subabruptly narrowed, serrate at the falcate, filiform- 
. pointed acumen. Capsule curved, suboval; teeth brown- 
yellow; cilia often appendiculate ; lid subacute or mamillate; 
pedicel shorter than in Hypnum (Hylocomium)squarrosumn. 
Paraphyllla few or wanting. Very rarely fruiting. 
On earth in woods r. Europe. Sweden, Norway, Finland, 
England, Germany. 
6. Pleuroziopsis alaskana James. Hypnum James. Pleu- 
roziopsis Kindb. 
Nearly allied to P. prolifera (— Hylocomium splen- 
dens Bryol. eur.) but smaller and often simply pinnate 
with usually crowded branches. Stem-leaves smaller, more 
crowded, not decurrent, ovate and mostly obtuse or short- 
pointed, faintly serrate above ; basal cells not numerous, 
reddish, the angular ones indistinct. Branch-leaves 
subovate or suboblong, mostly obtuse and nearly entire. 
Capsules unknown. 
On earth in open heaths, principally in the alps and 
northern districts, not r. £uwr.Norway (in the alps), Sweden 
(below the alps) ! Spetsbergen : Gyllencreutz. Switzerland: 
Culmann, com. Husnot. Aer. Alaska : Dall (herb. James) 
com. .C. Mueller; J. M. Macoun. Canada : Macoun ; 
Waghorne. 
7. Isothecium brachycladon Kindb. n. sp. 
Agrees with 1. myurum in the leaves obtusate or short- 
acurinate, those of the stem entire, at least below the 
middle ; upper cells (on some leaves) rhombic-oblong ; costa 
short and faint. Stem-leaves small, nearly entire, subovate, 
abruptly short-subulate or filiform-pointed ; cells sublinear; 
costa indistinct or very short. Branch-leaves suboblong ; 
obtusate or short-acuminate, serrate nearly all around ; 
apical cells suboblong ; costa reaching to the middle or 
shorter. Capsules unknown. Stem irregularly divided, 
often radiculose; branches very short, faintly curved, 
neither crowded nor julaceous. Tufts loose and green. 
Under damp rocks. Amner. Canada, Vancouver island 
(1893) : Macoun. 
8. I. Howei Kindb. n. sp. 
Leaves entire below the middle, serrate above, often 
filiform-pointed , long-acuminate, ovate-oblong or ovate- 
