26 MUSCI APPALACHIAN!. 
142. Grimmia ambigua. 
Sulliv. Icon. Muse. p.^^Q, t. 41. 
Hab. Kocks on " High Tornf!,' near Haverstraw, New York. 
143. Grimmia Fennsylvanica. 
Schwoegr. — Sulliv. Icon. Muse. p. 68, t. 43. 
Hab. a. on dry rocks, common ; B. on rocks in streams, Northern 
New Jersey, scarce. 
144. Grimmia Olneyi. 
Sulliv. Icon. Muse. p. 67, t. 42. 
Hab. On exposed rocks, Palisades, and Northern New Jersey and 
Southern New York ; also on rocks subject to inundation along the 
banks of the Passaic and Delaware Rivers. 
145. Grimmia Olneyi, pi. masc. 
Hab. River banks, with the preceding. 
146. Grimmia leucophaea. 
Grrev. — Bryol. Europ. III. t. 257. 
Hab. Exposed rocks. Palisades, &c. ; sterile. 
147. Racomitrium aciculare. 
Brid. — Bryol. Europ. III. t. 262. 
Hab. Rocky beds of streams, Palisades, New Jersey, &c. ; rarely 
fertile. 
148. Racomitriiim Sudeticum. 
Brid. — Bryol. Europ. III. t. 264. 
Hab. On irrigated rocks, SufFern, New York, and Northern New 
Jersey. 
