— 327 — 
middle, with double mamille, gen. appressed when dry, smaller 
than in Ph. calcarea. Perigonial leaves horizontally spreading. 
Tufts not high; fruiting stem very low. — Amer. r. Can.: Ma- 
coun. U. S.: Roell. 
b. Perigonial leaves gen. all obtuse subovate, the inner not 
distinctly costate. 
11.Ph.fontana L. — Mnium L.; Philonotis Bride!. 
Leaves plicate below, us. with numerous double mamille, 
mostly crowded: perigonial obtuse patent-erect, Tufts us. glau- 
cous green. — Wet places common and very veriable. Eur. 
Sweden, Norway, Switzerl.! Greece: Heldreich. Amer. Can.: 
Macoun; Waghorne. 
* Ph.seriata Mitten. — Bartramia Mitt.; Philonotis Lindb. 
Shoot-leaves gen. distant, spirally twisted when dry, — Ri- 
vulets in alps not common. Eur. Norway! France: Gasilien. 
Amer. Can.: J. Macoun. Alaska: J. M. Macoun. 
* Ph.gracilescens Schimper. — Ph. fontana *angustifolia Kindb. 
Laubm. Schw. u. Norw. 
Leaves (nearly all) small and narrow, often not Heciislid) 
those of shoots gen. distant: perigonial subacute at least the 
outer. Stem somewhat thin. Habit of Ph. marchica. — Wet 
rocks princ. in alps. Hur. not common. Sweden, Norway! 
France: Husnot. Spetsbergen: R. Gyllencreutz. 
€. Perigonial leaves not seen. Other leaves not plicate. 
~ 12.Ph.Mohrii C. M.; Bartramia C. M.; Philonotis Lq. et Jam. 
Leaves crowded, resembling those of Ph. fontana, but minutely 
serrulate above, gen. with double mamille below, not distinctly 
plicate, reflexed below, straight, open also when dry; costa 
long-excurrent. Capsule faintly plicate when dry; lid umbonate. 
Stem not high; pedicel as long. — Rotten logs r.: Amer. U. S: 
Louisiana: Mohr, com. C. Mueller. 
18.Ph.adpressa Fergusson; Braithwaite. | 
Leaves with gen. double mamillze, broad-ovate uniform, distant 
decurrent nearly appressed when dry; costa gen. not excurrent. 
Tufts long loose nearly eradiculose. Capsules unknown. — 
Wet places r. Eur. »Engl.»: Braithwaite. Amer. Greenl: Van- 
hoeffen. i 
IL. Philonotula C. Mueller. 
A. Leaves serrulate all around, narrowly ovate-lanceolate. 
à. Leaves subulate at apex; costa excurrent. Monoecious, 
14.Ph.rigida Bridel. 
Leaves faintly papillose or mamillose nearly erowded, us. 
