2IO Rhodora [November 



Vermont ( IV. G. Farlow) \ Woods Holl, Massachusetts {A. W. E.) ; 

 Orange and Hamden, Connecticut (A. IV. E.). 



7. LOPHOZIA Floerkii (Web. & Mohr) Schiffn. ; Engler & Prantl, 

 Nat. Pfianzenfam. I*: 85. 1893. Jungermannia Floerkii Web. & 

 Mohr, Hot. Taschenb. 410. 1807. J. Naumanni Nees ; Martius, 

 Fl. Crypt. Erlang. 143.//. 4, f. 16. 18 17. J. barbata, var. Floer- 

 kii Nees, Naturgeschichte der europ. Lebermoose, 2 : 168. 1836. 

 J. lyeopodioides. var. Floerkii Lindb. Muse. Scand. 7. 1879. Mt. 

 Washington, New Hampshire ( IV. G. Farlow % A. IV. E.). 



8. LOPHOZIA i.ycopodioidks (Wallr.) Cogn. Bull. Soc. roy. Bot. 

 de Belgique, 10: 278. 1872. Jungermannia lyeopodioides Wallr. 

 Fl. Crypt. Germ. X: 76. 1831. J. barbata, var. lyeopodioides Nees, 

 Naturgeschichte der europ. Lebermoose, 2 : 185. 1836. Mt. Katah- 

 din, Maine (/. F. Collins): Thorn Mt. and Carter Dome, New 

 Hampshire (••/. IV. E.). 



9. LOPHOZIA LYON! (Tayl.) Steph. Bull, de l'Herb. Boissier, II. 

 2: 157. 1902. Jungermannia quinquedentata Huds. Fl. Angl. 511. 

 1762? Web. & Mohr, Bot. Taschenb. 430. 1807? J.lnirbata, var. 

 quinquedentata Nees, Naturgeschichte der europ. Lebermoose, 2 : 196. 

 1836. /. Lyoni Tayl. Trans. Bot. Soc. Edinburg, 1 : 116.pl. 7. 1844. 

 Lophozia quinquedentata Cogn. Bull. Soc. roy. Bot.de Belgique, 10: 

 279. 1872. Mt. Kineo, Moosehead Lake, Maine {M. L. Fernald) ; 

 Jackson, New Hampshire (. /. IV. £.) ; Mt. Mansfield, Vermont 

 ( IV. G. Farlow) ; Meriden, Connecticut (A. IV. E.). 



The three species just quoted together with Z. gracilis. (Schleich.) 

 Steph. ( = Jungermannia barbata, var. attenuate Mart, of the Man- 

 ual) have sometimes been regarded as distinct species, sometimes as 

 well marked varieties of /.. barbata (Schreb.) Dumort. Nearly all 

 recent writers hold to the former view, recognizing five northern 

 species in the " barba ta "-group, but Pearson recognizes only four 

 species looking upon /,. Floerkii as a variety of /-. lyeopodioides, an 

 opinion which has the sanction of Lindberg. With a little care it is 

 not difficult to distinguish these five species, and, with the exception 

 of /.. Floerkii and /,. lyeopodioides, they show no tendency to vary into 

 one another. /. gracilis is not uncommon in mountainous regions and 

 is the smallest species of the group. It may usually be recognized 

 at a glance by its upright tlagelliform branches which bear gemmae 

 near the apex and closely appressed leaves in the lower part. These 

 branches, which are similar in appearance to the gemmiparous 



