238 BULLETIN OP THE UNIVERSITY OF WISCONSIN. 



ISOTHECIUM, p. 347. 



Leaves papillose on back. 



Cilia solitary, margin of stem leaves reflexed I. spiculiferum, 348. 



Cilia 2-3, margin of stem leaves not reflexed I. stoloniferum, 348. 



Leaves smooth on the back. 

 Perichaetial leaves costate. 



Upper branch leaves acute or acuminate, entire I. apocladum, 350. 

 Branch leaves acute or acuminate, serrate all 



around I. myosuroides, 347. 



Perichsetial leaves ecostate. 



Seta rough , I. lentum, 350. 



Seta smooth. 



Alar cells dark yellow or orange, quadrate or rect- 

 angular I. Cardoti, 494. 



Alar cells not colored, quadrate or round quadrate 



or not differing. 

 Alar cells obscure, costa vanishing in middle. 



Cilia equaling segments, capsule inclined I. acuticuspis, 349. 



Cilia shorter, capsule erect . . I. Brewerianum, 1 349. 



Alar cells distinct, costa % length of leaf I. myurellum, 495. 



EURHYNCHIUM, p. 351. 



I. Seta smooth. 



Points of leaves twisted, plants golden yellow . . E. Boscii, 352. 

 Points of leaves straight. 



Leaves not decurrent, cilia not appendiculate. 



Spreading, branches attenuate E. strigosum, 2 351. 



Appressed, branchlets short, julaceous . E. diyersifolium, 352. 



Leaves long decurrent, cilia appendiculate . E. substrigosum, 498. 



II. Seta rough. 



Leaves with filiform points. 

 Stems short, with erect fasciculate branches, stoloni- 



ferous E. Vaucheri, 414. 



Stems long, prostrate, irregular, branched, not radicu- 



lose E. piliferum, 353. 



1 Leaves not papillose, teste M. A. Howe in litt. Including H. aygrcgatum. Mitt., 

 L. & J. Man. 350 sec. R. & C. Rev. Bryol. O: 20. 1893. 

 8 See Appendix, nos. 496, 497. 



