— io6 — 



11. Costa vanishing below apex M. iiornujn. 



Costa reaching apex 12. 



12. Costa toothed on the back; dioicous 13. 



Costa not toothed on the back; synoicous 14. 



13. Costa excurrent in upper leaves; leaf cells o. 18-0.030 mm. 



M. pseudolycopodioides. 



Costa percurrent; leaf cells about 015 mm. .... 

 M. orthorrhynchum. 



14. Capsules clustered M. spi?iulosum. 



Capsules solitary M. marginatum . 



It is to be regretted that the question of plant names should 

 arise to bother beginners, but many of those in Lesquereux and 

 James' Manual are untenable. We have chosen to use the nomen- 

 clature of Braithwaite's "British Moss Flora," which is also fol- 

 lowed in the editor's " Vermont Mosses." Mrs. Smith very kindly 

 contributes a table of synonyms. 



In using the key it will be well to remember that M. cuspi- 

 datum, var. rugicum often has entire leaves. The American M. 

 lycopodioides of L. & J. is doubtfully the same as the European 

 plant of the same name, and hence was called M. pseudolycopo- 

 dioides C. M. & Kindb. Mrs. Britton informs us that the plant 

 we described in the July issue as M. pu?iciatum is really the 

 variety e latum. The variety grows on the ground in bogs, while 

 the species grows on wet stones and is much smaller. 



The writer has found M. stellare and M. cinclidioides abun- 

 dant in Plymouth, N. H ; both sterile except a very few capsules 

 of M. stellare. M. stellare grows on humus at the base of trees 

 in swampy woods. M. cinclidioides in the swampy places near 

 by; it resemles M. punctatum, var. elation in appearance, but is 

 easily distinguished by the non-margined leaves. 



Mrs. E. G. Britton very kindly furnished us with a list of the 

 Mniums of this region, and has promised an article on their hab- 

 itats and distribution for the January issue. — A. J. G. 



SYNONYMS. 



In the list of species of Mnium found in eastern United States 

 the first name given is the one used by Dr. Grout in his keys. B. 

 stands for Braithwaite, "British Moss Flora;" L &* J. for Les- 

 quereaux & James, " Manual of Mosses of N. A. ; " D. J. for 

 Dixon 8c Jameson, "Student's Handbook British Mosses," and 

 H. for Husnot, "Muscologia Gallicse." In cases where any of 

 these authorities are omitted, it means that the moss is not treated 

 by those authors: 



