102 CUMMINGS 



of Dr. Rothrock's list of the species collected by Dr. Bean, Nylander 

 states that under the name P. communis DC. rock forms of P. rhodo' 

 leuca Fr. fil. are included. 



RINODINA. 



KEY TO THE SPECIES. 



Thallus incrusting mosses turfacea. 



Thallus on wood or rock. 



Thallus brown, hypothallus conspicuous sophodes atrocinerea, 



Thallus white, hypothallus inconspicuous sophodes confragosa, 



91. Rinodina sophodes confragosa (Ach.) Tuck. 



Parmelia confragosa AcnAKius, Meth. Lich. Suppl. 33. 1803. 

 Rinodina sophodes confragosa Tuckerman, Syn. N. A. L. 208. 1882. 



Farragut Bay (Trelease, 826). On old boards. According to Roth- 

 rock, Dr. Bean collected this species in Alaska, but no definite locality 

 is given. Tuckerman, Syn. N. A. L. 208, indicated the Pacific Coast 

 as the habitat of this species in this country ; I can find no other 

 records of it. 



92. Rinodina sophodes atrocinerea (Diks.) Nyl. 



Lichen atrocinereus Dikson, Crypt. Brit. 14. /. p. / 2. 1785-1801. 

 Rinodina sophodes b. atrocinerea Nylander, Lich. Par. N. 43. 1855. — Sow- 

 ERBY, Eng. Bot. t. 2og6. 



Plover Bay, Siberia (Trelease, 992). On rock. New to the Alaskan 



region. 



93. Rinodina turfacea (Wahl.) Th. Fr. 1 



Lichen turfaceus Wahlenberg, F1. Lapp. 408. 1812. 

 Rinodina turfacea Th. Fries, Lich. Arct. 126. i860. 



St. Matthew Island (Trelease, 866 in part) ; St. Michael (Setchell). 

 The specimen from St. Michael grew on moss with Biatora hypno- 

 phila and Placodium jungermannice. Collected by Wright on the 

 islands of Bering Strait, and recorded by Rothrock as occurring in Dr. 

 Bean's collection, but with no definite locality. Nylander records it 

 under the synonym Lecanora turfacea as collected at Port Clarence. 

 Reported also from British Columbia, Greenland, and Labrador. 



Additional Alaskan species of Rinodina are as follows : R. nim- 

 bosa (Fr.) Th. Fr. and R. sophodes (Ach.) Nyl., collected by Dr. 

 Bean, no definite locality being recorded, R. sophodes being listed 

 also by Nylander for Port Clarence ; R. turfacea roscida Th. Fr. 

 and R. turfacea miniarea Nyl., collected by Wright on islands in 

 Bering Strait. 



