= i 2 
b. All leaves pellucid; those of stem smooth. 
19.T.paludosum Sullivant. — Hypnum Sull. ic. muse.; Thui- 
dium Kindb. 
Leaves orange at insertion; cells oblong-lanceolate. Stem- 
leaves recurved ovate-lanceolate gradually long-acuminate, faintly 
denticulate above. Branch-leaves ovate-oblong shorter-acuminate 
faintly denticulate, slightly mamillose at back. Stem and 
branches as in the last. — Peat-bogs r. Amer. Can.: Macoun; 
White. U. S.: Austin, com. Macoun; Roell, com. Cardot. 
B. Stem not tomentose; paraphyllia short. Leaves opake 
very papillose us. not large; cells gen. suboval. Capsule faintly 
curved. Dioecious r. fruiting. 
20.T.abietinum L. — Hypnum L.; Thuidium Br. eur. 
Leaves brownish at insertion, appressed when dry, gen. not 
recurved. Stem-leaves from ovate base abruptly short-acuminate, 
entire or indistinctly crenulate. Branch-leaves subovate denti- 
culate. Branches us. distant and brown-green. — Dry earth 
and stones r. in wet places. Eur. common. Sweden fruiting, 
Norway, Germany, Switzerl.! Amer. not r. Can.: Macoun. 
* T.hystricosum Mitten; Braithwaite. 
Leaves larger, less appressed when dry us. green; cells often 
suboblong. Capsules unknown. — Calcareous prine. wet hills 
r. Eur. Switzerl. near Freiburg 1855! 
*T.pachycladon Kindb. note on Canad. bryol. 1893. 
Leaves large, orange at insertion; those of stem ovate-lanceo- 
late gradually long-acuminate; cells princ. the uppermost sub- 
oblong. Branches green crowded. Habit of T. Blandowii. Cap- 
sules unknown. — Wet places r. Amer. Can. Rocky mts: Macoun. 
Fam. 13. Hypnacee. 
46. Pylaisia Bryol. eur. 
LIntrieatz?. | Endostomial segments cohering to above middle 
With teeth. Branches julaceous often curved. Tufts very in- 
tricate green or dark green. Leaves entire, those of stem de- 
current; alar cells small green very numerous. Capsule oblong 
or oval; teeth yellow. Spores large. 
2.Polyanthoidew.  Endostome not cohering with teeth. Bran- 
ches gen. not julaceous. Tufts less intricate. Leaves not 
distinctly decurrent, often denticulate; alar cells less numerous. 
Capsule often subcylindric; teeth often pale. Spores gen. small. 
1. Intricate. 
A. Leaves with ovate-lanceolate base; cells narrow sublan- 
qt Ceolate, Capsule oblong. 
