116 John Lewis Russell on the 
G. maritima. ('Turn.)  Muscol. Brit. p. 66, tab. 13. 
Schwaégr. Suppl. I. p. 95, tab. 22. On rocks, Nahant, B. 
D. Greene ! 
G. alpicola. (Swartz.) Brid. Bry. Univ. I. p. 165. Hedw. 
Sp. Musc. p. 77, tab. 15, fig. 1-5, (leaf not sufficiently ellip- 
tical.} Considered to be hardly distinct from Grimmia apo- 
carpa. Hab. Nahant, B. D. Greene! 
G. pulvinata: (Smith.)  Muscol. Brit. p. 68, tab. 13. 
Synonym. Fissidens pulvinatus : Hedw. Sp. Musc. p. 158, 
tab. 40. Abundant on rocks: Young fruit appearing in 
November. Chelmsford ! ! 
Dipymopon purpureum. Hook. & Tayl. Muscol. Brit. p. 
113, tab. 20. Br. FI. II. p. 28. I have beautiful specimens 
of this moss, from the western part of the State, received from 
Dr. Porter ! ; 
D. capillaceus. (Schrad.) Muscol. Brit. p. 119, tab. 20. 
Resembles some of the smaller Brya. Occurring with perfect 
fruit in January, Hingham ! also Salem ! ; 
 "TurcHosrowux pallidum. Hedw. St. Cr. vol. I. tab. 27. 
Brid. Bry. Univ. I. p. 489. “Environs of Boston,” B. D. 
Greene ! 
Var. 8 strictum. (Swartz.) Schwaegr. Suppl. tab. 
123: a more delicate and smaller form, occurring at Ply- 
mouth !. Hingham ! 
Dicranum. § Leaves bifarious, Fissrpens. Hedw. 
D. (Fissidens) adiantoides. (Swartz) Br. Fl. I. p. 36 
Muscol. Brit. &c. tab. 16. In shade of woods, and neat 
water: Hubbardston! Hingham ! Chelmsford ! 
— $$ Leaves inserted on all sides of the stem. 
Dicranum glaucum. Hedw. Sp. Musc. p. 135. Schwaegr: 
Suppl. I. p. 187. tab. 48. Br. Fl. I. p. 37, &c. Western 
Massachusetts ; with fruit, from Dr. Porter ! with fine fructi- 
fication, from Manchester, Oakes! also common in 
woods about Boston ! : 
