68 
Wisconsin Academy of Sciences , Arts and Letters. 
Acute or abruptly acuminate-apiculate. 
Almost entire, only alar cells quadrate or rectangular. 
Leaves acuminate-apiculate, teeth with 14 —17 
articulations, capsule 1: 3.5 — 4 . . €. cladorrliizans, 1. 
Leaves abruptly short apiculate, teeth with 6 — 8 
articulations, capsule 1: 5 — 5.5 . . . C. seductrix, 2. 
Leaves not apiculate, teeth with 22 — 26 articula¬ 
tions, capsule 1: 2.5—3 .... C. coinpressmn, 5. 
Distinctly serrulate, all basal cells rectangular. 
Annulus 0, teeth obliquely striolate . €. Drimimondii, 6. 
Annulus large, teeth vertically striolate . C. Sulliyantii, 7. 
CLIMACIUM, p. 313. 
» 
Capsule straight, lid rostrate. 
Ovate-oblong (1: 2.5— 3), leaves slightly decurrent and 
hollowed at basal angles.€. dendroides, 1. 
Cylindric (1:5 — 6), leaves long decurrent and broadly 
auriculate.€. Ainericaimin, 2. 
Capsule arcuate, lid conic.C. Rutlieiiicimi, 3. 
ORTHQTHECIUM, p. 315. 
Leaves lanceolate, long and narrowly acuminate . . 0. rufescens, 1. 
Leaves exactly ovate, apex flexuous, not plicate . . 0. rubelluni, 2. 
Leaves lanceolate to ovate lanceolate, plicate, not acumi¬ 
nate .0. cliryseum, 3. 
HYPNUM, p. 316. 1 
I. Leaves spreading. 
A. Leaf cells short (1:3 or less.) 
1. Leaves papillose. 
* 
a. ParapliyIlia present. 
i. Costa obsolete .H. dimorplmm, 4. 
1 Nos. 2, 17, 18, 92, 93, 91, 114, 193, 194 and 195, are not included in this key. No. 2 is not 
North American, the locality cited by Schimper being York (Eng.), not New York. (Cf. 
A. Gepp in Jour. Bot. xxvii (1889), 152). The remainder are characterized by Lesquereux 
and James as of uncertain relationship or insufficiently known. No. 30 has been declared 
Tby Renauld and Cardot (Bot. Gaz. xiii (1889), 202), to be a Homalothecium, but is still 
given a place in this key. 
