110 Rhodora [May 



Schwein. Spec. Fl. Am. Sept. Crypt. 9. 1821. Madotheca platy- 

 phylloidea Dumort. Recueil d'Obs. sur les Jung. 11. 1835. Mado- 

 theca Jadhi Schiffn. Lotos 48: 348. 1900. Porella Jackii C. Jensen, 



Danmarks Mosser 1: 240. 191."). [Text figs. 14-40], 



On rocks and trunks of trees. Maine: Auburn (E. D. Merrill 8); 

 Mt. Desert Island {E. L. Rand); vicinity of Schoodie Lake, Piscata- 

 quis County (A. W. E.); Bristol and Madison (E. B. Chamberlain 

 1344, 1503); Hebron (J. A. Allen); Southwest Harbor (S. A. Limey)] 

 Pleasant Ridge Township, Somerset County [E. B. Chamberlain 8287); 

 Farmington (./. F. Collins 1173); near Prospect Harbor (.1. H. 

 Northrop). New Hampshire: Crawford Notch (E. Faxon); Jackson 

 and Franconia Notch (A. II'. A'.); Madison (//. //. Bartleft 1260, 1251); 

 White Mountains (" E. T. 7"). Vermont: Willoughby {A. Lorenz); 

 LefTert's Mills, Chittenden County (C. M. Cooke, Jr.); Bolton 

 {A. IF. E.); Newfane (M. A. Howe, distributed in Amcr. Hep. 87, 

 as M. platyphylla). Massachusetts: Dedham and Brookline (E. 

 Faxon); West Newbury (C. C. Haynes); Woods Hole {A. W. E.); 

 Brewster (F. !S. Collins). Rhode Island: Providence and North 

 Kingston (./. F. Collins 599, 798); Chepacket (G. IF. BwrKngame207). 

 Connecticut: Hamden (1858), New Haven, Panbury, Bethany and 

 East Haven (1). C. Eaton); Kent, Lcdyard, Hamden, Orange, West 

 Hartford, Meridcn and Salisbury {A. IF. E.); Plainheld (./. /,. Shel- 

 don); Stafford, Portland, North Haven, Bolton and Vernon ((?. E. 

 Nichols); Southington ((A 1 . B. Chamberlain 1437); Redding (C. C. 

 Haynes); Killingworth (F. W.llall); Canterbury (S, B. Hadley); 

 Portland and Glastonbury (F. Wilson); Fast Lyme (C. B. Orates); 

 Durham (A. Lorenz). To give a further idea of the distribution of the 

 species in North America the following stations outside of New 

 England may be given. Nova Scotia: near Indian Brook and in the 

 valley of the Barrasois, ('ape Breton (G. E. Nichols J,2, 65, 1545); 

 Kentville (//. B. Bailey); Big Intervale and Baddcck, Cape Breton 

 (J. Macovn 66, 68); near Pictou (Howe &• Lang 584); m>ar Yarmouth 

 (J. Macovn £4); Sandy Cove (./. 1). Loire 22). Ontario: Ottawa (./. 

 Macovn, distributed in Can. Hep. 9, as P. platyphylla); Algonquin 

 Park (J. Macovn 185); Owen Sound {Mrs. Boy). New York: Chit- 

 tenago and Clarkson {D. C. Eaton, 1855); Yonkers {E. C. Hoiee); 

 Murray Island, Jefferson County {Bobinson & Mason 10(1); Mt. 

 Colburn (E. G. Britton 24), somewhat doubtful; I'nderclilf (C. C. 

 Haynes 330); Onteora (A. M. Vail 3); Bear's Head, Sand Lake (8. //. 



