‘he ee, 
6.P.faleieuspis C. M. et Kindb. cat. Canad. m. 
Leaves broadly ovate-lanceolate nearly entire, more or less 
acuminate; cells oval-oblong. Perichetial leaves abruptly narro- 
wed to a somewhat short (subulate or subfiliform) often falcate 
acumen, entire and faintly papillose; costa faint. Capsule obo- 
vate subsymmetric; endostomial segments lower than teeth; 
pedicel short; cilia and lid not seen. Tufts sparingly radiculose 
green or olivaceous. Branches subjulaceous subpinnate; brancb- 
lets numerous. Corresponding to P. brachyclados. — Rocks in 
alp. region r. Amer. Pacif. distr. Can.: Macoun. U. 8: Roell. 
7.P.oligoclada Kindb. bull. Tor. club XVII, 1890. 
Leaves from broad-ovate base abruptly narrowed to a longer 
subulate nearly entire acumen, densely crowded not decurrent; 
uppermost cells narrow, the others round-quadrate very small 
with incrassate walls and not confluent. Perichetial leaves 
longer-acuminate. Tufts sparingly radiculose dark brown. Bran- 
ches irregularly divided; branchlets few distant. Capsules un- 
known. — Rocks r. Amer. Pacif. distr. Can.: Macoun; Roell, 
com. Cardot. 
IL. Ptychodium Schimper in part. 
A. Leaves somewhat large, often (also when dry) distinctly 
faleate, gen. smooth; costa not excurrent. Stem-leaves gen. 
entire. Habit of Hypnum (Cupressina) or Brachythecium. 
8.P.plieata Schleicher. — Hypnum Schl.; Pseudoleskea Kindb.; 
Lesquereuxia Lindb.; Ptychodium Schimper. 
Leaves large not or slightly decurrent, from ovate-oblong or 
ovate-lanceolate base long-acuminate subulate; upper cells linear, 
middle lanceolate or oblong-lanceolate. Branch-leaves us. den- 
ticulate near apex. Perichetial leaves acuminate often costate, 
inner with subulate acumen. Capsule suboblong us. finally 
arcuate; peristome orange or yellow; segments not lower, us. 
not rimose, their basal membrane nearly half as high; cilia 
rudimentary; lid short-conic obtuse or acute; pedicel 1—2 c. m. 
long. Tufts loose nearly eradiculose, brown at least below. 
Stems much ramose often subpinnate. R. fruiting. — On rocks 
or on ground in alp. woods gen. r. Eur. Switzerl. not r.! Swe- 
den: Lindberg. 
*P.rhetiea Kindb. n. subsp. 
Leaves entire shorter and somewhat smaller, from subovate 
base less gradually attenuate and shorter acuminate, more 
appressed when dry. Outer perichetial leaves abruptly acumi- 
nate with short or indistinct costa, inner nerveless obtusate 
