1.P.intricata Hedwig. — Pterigynandrum H.; Pylaisia Schir 
per; Sulliv. icon. m. A 
Leaves long-acuminate us. faintly recurved; perichetial sub 
near-lanceolate not plicate, the inner with short subulate poin 
Lid of capsule with short oblique beak. Branches crowde 
Tufts green. — Trees and logs. Amer. not r. Can.: Macow 
U. S: Sullivant, com. C. Mueller. Eur. r. »Russia near 
Svir»: Elfving. 
2.P.ontariensis C. M. et Kindb. cat. Canad. m. TY 
Differs from the last: Leaves more recurved and sho ti 
acuminate; perichetial plicate ovate-oblong short-acuminate í 
obtusate. Peristomial teeth broader; lid obtuse. Branches les 
crowded. Tufts often dark green. — Trees. Amer. Can. eastern 
distr. not r: Macoun; Moser. ^ 
B. Leaves with short base; cells. dilated. 
3.P.Selwyni Kindb. in Ottawa Naturalist II. THAM 
Leaves subovate us. recurved to the short acumen; cells gen. 
suboblong.  Perichetial leaves not plieate, ovate oblong lo 
acuminate often filiform-pointed. Capsule broad-oval; lid obt 
Branches crowded. Tufts dark green or brown. — Trees 
Amer. Can.: Macoun; Dearness and White. U. 8: Roell. 
4.P.cyrtophylla Kindb. n. sp. 
Leaves broad-ovate gen. obtusate obtuse, not or slightly 
curved; cells oval, larger than in the 3 last species. Bran 
crowded. Tufts green. Capsules unknown. Old logs r. Am 
Can. Peace river: Macoun 1872. 
2. Polyanthoides. 
A. Leaves distinctly denticulate. 
5.P.heteromalla Bruch et Schimper. 
Leaves larger than in P. polyanthos; inner basal cells. 
insertion) suboval not yellow, the others linear-lanceolate 
the alar. Stem-leaves ovate-oblong filiform-pointed not 
ved; branch-leaves shortly acuminate-subulate. Capsule 
oblong; teeth dark yellow; cilia none; lid subobtuse. Brancl 
us. curved and yellowish. — Trees and stones r. Amer. Ca 
Macoun. 
6.P.pseudo-platygyrium Kindb. cat. Canad. m. na 
ves ovate-lanceolate long-acuminate filiform-pointed, o 
recurved to acumen; inner basal and alar cells orange, 
others sublinear. Capsule subeylindric pale with dark 
border at mouth; peristome | pale; segments widely ope 
middle, basal membrane low; lid short-pointed. Tufts br 
green. — Logs r. Amer. Can.: Macoun: U. $.: Roell. 
