ADDITIONS AND CORRECTIONS. 
Page 12. 
8. Sphagnum sedoides, Brid.— The form mentioned under this 
species has been found by Mr. James, in Ethan Pond, Willey Mountain, New 
Hampshire. 
Page 19. 
4. Campjslopus viridis, Sulliy. & Lesqx. (Muse. Bor-Amer., 
No. 72.) Closely cespitose; stems ascending, mostly simple; leaves erect- 
patent (when dry tortuous), lanceolate-subulate, very fragile. — In woods, on 
decayed logs, New England to Ohio.— A dark-green species, resembling Di- 
cranum interruptum, remarkable for its fragile leaves, which are seldom found 
unbroken. 
Page 24. 
. Fissidens exiguus, Sulliv.— Of this species, No. 39, Fissidens 
bryoides, and No. 40, Fissidens bryoides, var., of Drummond’s 2d Coll. of 
American Mosses, are probably large forms. The bordering of its leaf is 
variable. 
. Fissidens synoicus (n. sp.).— Hermaphrodite ; stems simple, 
inclined, 3-6! long; leaves 12-14, oblong-lanceolate, oblique, shortly acu- 
minate, bordered except at the denticulate apex, the blade shorter than the 
duplicature, the dorsal wing vanishing above the base ; costa continuous ; cap- 
sule terminal, oval-oblong, erect ; operculum rather long-rostrate.— San Mar- 
cos, Texas, Wright.— A small species, distinct by its whitish-green leaves with 
a close areolation, regular erect capsule, and hermaphrodite inflorescence. 
Page 31. 
2. Syrrhépodon Texanus (n.sp.). Stems about 1! high, simple ; 
upper leaves pale green, serrated, ligulate, straight (tortuous when dry), spread- 
ing from a subciliate-dentate sheathing base, canaliculate, surrounded except 
near their point by a narrow pellucid border of linear cellules; areolation of 
