194 THE EEV. W. A. LEIGHTON ON LICHENS 



No, 84. P. CANiNA, Hoffm. 



Hah. Great Slave Lake. •^ 



No. 85. P. RUFESCENS, Hoffm, 



Hab, Great Bear Lake; Great Slave Lake. 



No. 86. P. SPURIA, DC, 

 Hab, Great Slave Lake. 



No. 87. P. VENOSA, Hoffm, 



Hab. Great Bear Lake. 



J 



SOLOKINA, Ach. 



No. 88. S. SACCATA, Ach. 



Hab. Great Bear Lake ; Great Slave Lake. 



No. 89. S. LiMBATA {Sommrf.). 



Lichen spongiosus, E. Bot, t. 1374.— S. saccata, var. spongiosa^ Nyl 

 Syn. 331 .— S. limbata, Mudd. Man. 85.— Lecanora limbata, Sommrf. 

 SuppL Fl. Lapp, 105. tab. 3. figs. 1-9. 

 Hab. Great Bear Lake. 



The 'English Botany' figure gives a fair general representa- 

 tion of this plant, especially of the cupular margined apothecia. 

 Dr. Nylander, in his ' Synopsis/ considers it only as a variety of >S. 

 saccata. It seems something very nearly approaching to pre- 

 sumption to diifer from so learned and accurate a botanist as Dr. 

 W. Nylander, the facile princeps of European lichenologists ; but 

 the different shape and size of the sporidia, added to the other 



peculiarities 



gard it as distinct. 



PLATE IL 



Fig. 8. Spore of S. saccata, mag. 1200 lin. 

 Fig. 9. Spores of S. limbata, magn. 1200 lin 

 Fiff. 10. Ascus of the same. maem. 330 lin. 



RlCASOLIA, Z). N. Nyl 



No. 90. R. HERBACEA, B.N. Fries, L. S. 334. 



Hab. Great Slave Lake. 



mi 



No. 91. P. SAXATILTS, Ack. 



Hab. Fort Franklin ; Great Bear Lake. 



No. 92, P. OLiVACEA, Ach. 



Hab. Great Bear Lake; Great Slave Lake; York Factorjs Hudson's 

 Bay. 



No. 93. P. STYGIA, Ack. 



Hab. Fort Enterprise. 



