c MR A 
to. ?, or shorter. Capsule oblong; teeth yellowish; cilia nodose 
shorter; lid muticous acute. Stem pinnate; branches gen. distant, 
often flagelliferous. Tufts dark green. — Rocks r. Amer. Can. 
Vane. isl: Roell 1888, Macoun 1893, 
20.Il.Holzingeri Renauld et Cardot. — Thamnium Ren. et 
Card.; Isothecium Kindb. 
Differs from the last: Leaves more obtuse, not recurved, 
less crowded; nearly all cells suboval or broad-oval, upper round- 
hexagonal. Stem-leaves oblong-lingulate obtusate gen. obtuse; 
branch-leaves ovate-oblong often subacute. Lid of capsule with 
oblique beak. — Amer. r. U. S. Californ.: Marshall A. Howe. 
37. Pterogonium Swartz. 
1.P.ornithopodioides Hudson. — Hypnum Huds.; Pterogonium 
Lindberg; P. gracile Swartz. 
Leaves from broad-oval base gen. short-acuminate, more or 
less sharply serrate at acumen; angular cells rotundrate-qua- 
drate, inner basal elongate; middle cells oval; costa vanishing 
near middle. Capsule subeylindric; lid subapiculate; calyptra 
hairy; pedicel long. Branches thick julaceous curved when dry. 
R. fruiting. — Rocks and trees gen. r. Eur. not r. in south. 
distr. Switzerl.! Amer. r. U. S.: Brewer, com. Cardot. 
38. Hylocomium Bryol. eur. 
A. Stem with gen. numerous paraphyllia. 
a. Stem simply pinnate. Leaves somewhat large; costa so- : 
metimes simple. : 
I. Eu-Hylocomium. Leaves not mawmillose.  Pedicel of 
capsule smooth. 
b. Stem us. bi- or tripinnate. Leaves gen. small; costa double. 
ll. Pleurozium. Leaves mamillose. Pedicel smooth. 
Hyocomium. Leaves not mamillose. Pedicel. rough. 
. B. Stem simply pinnate without paraphyllia. : 
Hypnopsis. Leaves somewhat large, sometimes mamil- 
lose; costa often simple. Pedicel r. rough. 
I Eu Hylocomium. 
A. Stem-leaves serrate only at apex. Branch-leaves sharply 
Serrate or fimbriate also below middle. Branches subjulaceous 
often turgid, i 
1.H.pyrenaicum Spruce. — Hypnum Spr.; Hylocomium Lindb.; 
ypnum fimbriatum Hartman; H. Oakesii Sull. ic. m.; Hylo- 
comium Schimp. 
_ Leaves orange at insertion; alar cells not defined; costa often 
Simple. Stem-leayes ovate acute sometimes short-acuminate; 
