52 
Wisconsin Academy of Sciences , Arts and Letters. 
PHYSOOMITRIUM, p. 196. 
Capsule immersed. P. immersum, 1, 
Capsule exserted. 
Leaves entire or nearly so. 
Seta short, little exceeding leaves P. Hookeri, 4. 
Seta much longer (5-10 mm.) 
Leaves ovate-lanceolate, colium distinct . P. acuminatum, 5. 
Leaves linear-lanceolate, colium 0 P. turhinatum, 6. 
Leaves serrate, cells at mouth of capsule transversely 
elongate. 
5-7 rows. P. pygmseum, 2. 
12-15 rows [P. megalocarpum ? ] 
Leaves more or less acuminate, distinctly yellow- 
bordered . P. megalocarpum. 1 
Leaves acute, not bordered.P. pyriforme, 2. 
ENTOSTHODON, p. 199. 
Leaves acute, capsule short-pyriform. 
Costa percurrent, teeth dark red, striolate . . E. Drummondii, L 
Leaves acuminate, capsule long-pyriform. 
Costa reaching middle, teeth whitish, granulose . E. Bolanderi, 2. 
Costa subpercurrent, teeth red, nodose, papillose . E.^Templetoni, 3. 
PUN ARIA, p. 200. 
Annulus 0. 
Leaves entire or nearly. 
Capsule arcuate, leaves acuminate 
Costa excurrent .. 
F. Americana, 1. 
Costa vanishing. 
F. Mediterrauea, 2. 
Capsule erect, leaves acute .... 
. F. Californica, 5. 
Leaves sharply serrate. 
Short-pointed, lid convex, mamillate 
. F. serrata, 4. 
Long acuminate, lid short conic 
F. calcarea, 3. 
Annulus large, revoluble. 
Capsule irregularly plicate and furrowed. 
Leaves with involute margins . . . . 
F. convoluta, 6. 
Leaves with plane margins .... 
F. fllvicans, 7. 
Capsule distinctly striate-costate. 
Leaves short-acuminate, lid large, spores 12-17 fi 
F. liygrometriea, 8. 
Leaves long acuminate, lid small, spores 24-28 ju 
F. microstoma, 9. 
1 Kindberg: Bull. Torr. Bot. Club , xvi (1889,) 94. 
