234 BULLETIN OP THE UNJaERSITY OF WISCONSIN. 



CLAOPODIUM, p. 327. 



Seta smooth C. lenconenrnm, 328. 



Seta rough. 



Perichastial leaves costate . . . . C. Whippleanum, 328. 

 Perichaetial leaves ecostate. 



Bright green, leaves open, loosely imbricate C. laxifolium, 329.. 



Dirty or yellowish green, leaves subfalcate secund, 



closely imbricate C. crispifolium,i 329. 



TRIPTEROCLADIUM, p. 330. 



Leaves shortly bicostate. 



Obscurely denticulate at the apex . . T. lencocladnlum, 330. 



Distinctly denticulate all around . . . T. compressulum, 331. 

 Leaves ecostate T. rupestre, 444- 



CAMPTOTHECIUM, p. 331. 



Plants regularly pinnate. 

 Stems erect, stout (to 15 cm.) . . . . C. megaptilum, 334. 

 Stems prostrate. 

 Leaf base entire, alar cells abundant. 

 Capsule oblong, segments split below . . C. anreum,* 4.4.7. 

 Capsule long cylindric, segments split throughout C Amesise, 44S.. 

 Leaf base denticulate, alar cells few . . C. Nuttallii,* 332. 



Plants irregularly branched, stout, in extensive mats. 

 Seta rough. 

 Leaves ovate-lanceolate (1:3), cilia 3, as long as the 



segments C. seneum,* 331. 



Leaves long lanceolate (1 : 5), cilia 1-2, long or short, 



operculum rostrate ..... C. lutescens, 331. 



Seta smooth C. nitens, 333. 



Plants irregularly branched, slender, cilia 1-2, short oper- 

 culum obtusely conical ..... C. arenarium, 333. 



1 Including H. ramulosum Hpe., L. & J. Man, 328. 



' H. pinnatifldum S. & L., L. & J. Man. 333, is reduced by Ren. & Card, to a variety 

 of C. aureum Sch. Hedw. 32: 255, 1893. 



' C, hamatidcns Kindb. Mac, Cat, 189, sec. Ren. & Card,, ihid. 256. See also Appendix^ 

 no. 449. 



4 See Appendix, no, 446. 



