Mosses of Eastern Massachusetts. 115 
APLOPERISTOMI. 
(With single peristomes. ) 
Diruyscium foliosum. (Mohr.) Muscol, Brit. p. 32, tab. 
8. Br. Fl. IL p. 13. "This little moss seems to have a wide 
distribution and various situations of growth. I have found it 
in the pine woods of Sandwich ; on shady hill-sides at Ply- 
mouth; in similar situations at Hingham; in profuse abun- 
dance on a hard-trodden path in woods at Danvers, literally 
affording a carpet of bristly perichztia; I have specimens from 
Dr. Porter, Plainfield! and it occurs also, in abundance, 
about Ipswich, Oakes ! 
Terraruts pellucida. Hedw. Sp. Muse. p. 45, tab. 7, fig. 1. 
Muscol Brit. p. 33, tab. 8, &c. Abundant on decaying 
stumps of trees in shade of woods, and easily distinguished by 
its peristome of four teeth, and the frequent occurrence of 
rosular, obcordate leaves on the tops of the barren stems. 
! Plymouth ! Ipswich ! 
SPLACHNUM ampullaceum. (Linn.) Muscol. Brit. p. 39. 
tab. 9. Br. Fl. IT. p. 15. Schwaéer. Suppl. II. p. 52. Shady 
borders of woods, Manchester, Oakes ! 
Wzissra microdonta. Hedw. Sp. Musc. p. 67, tab. 11, 
fig. 1-13. Synonym. Weissia viridula 8 microdus. Brid. 
Bry. Univ, Į, p. 335. Crevices of rocks at the limekilns, 
Chelmsford ! ‘also on shady borders of woods, South Hingham ! 
Fructification, October. - 
"+ Controversa. (Hedw.)  Muscol. Brit. p. 84, tab. 15. 
Fruit in November, Hingham ! 
W. acuta, (Hedw.) Muscol. Brit. p. 87, tab. 15. Br. Fl. 
II. p. 24, Vicinity of Boston. B. D. Greene! 
W. lanceolata. Hooker & Taylor. Muscol. Brit. p. 80, 
tab. 14. Br. FI II. p.20. Sheffield ; Andrew L. Russell ! 
Gronna pilifera. (Pal. de Beauv.) Brid. Bryol. Univ. I. 
P. 173. Synonym. Grimmia Pennsylvanica, Schwaégr. 
Suppl. tab. 25. On rocks, Brookline. George B. Emerson! 
also, finely in fruit, in similar situations, South Hingham ! 
