LICHENES. 5 



SQUAMARIA CHRYSOLEUCA. 



Squamaria chrysoleuca (Sm.) Nyl. Th. Fries, Lich. Scand., p. 22-t. 



Locality. Granite Harbour, January 20th, 1902, on dark basic tuff. 

 Notes. This plant is an arctic and alpine species, recorded by Dr. Fries 

 (Borchgrevink, p. 208) for the Antarctic continent. 



LECANORA EPIBRYON. 



Lecanora epibryon Ach. Th. Fries, Lich. Scand., p. 239. 



Locality. Winter Harbour, December 15th, 1903, over moss on earth. 



Notes, A few apothecia were found, evidently belonging to the above species. 

 The spores measured 'OlS-'OH mm. by '004-'005 mm. This species is recorded 

 from arctic America and Asia and from Europe, also from Kerguelen. 



LECANORA EXPECTANS. 

 (Plate L, fig. 2.) 



Locality. Winter Harbour, December 15th, 1903, over moss. 



Diagnosis. Crusta tenuissima, tartarea, albida aut cinerea, aut saepius obsoleta ; 

 apothecia ad 1 mm. lata, nigra, aut pallide rufescentia, discrete pruinosa, primum thallo 

 immersa, margine cincta albido, crasso, demum elevatiora, sed semper margine 

 distincto instructa, plana, saepe contigua et angulosa ; hypothecium decolor, sed 

 gonidiis superimpositum ; sporae octonae, hyalinae, simplices, '01 4-' 01 5 mm. longae 

 et '005-'006 mm. latae. Habitat supra muscos. 



Notes. This new species resembles, in external appearance and by its habitat, 

 some species of Rinodina, such as Rinodina turfacea, but on examination the difference 

 in the nature of the spores is revealed. It is nearly related to Lecanora epibyron, but 

 differs in the disk of the apothecium, generally being darker in our new species and 

 also rougher and not smooth and shiny. 



LECANORA LAVAE. 

 (Plate L, fig. 1.) 



Locality. Winter Quarters, on dark basic tuff. 



Diagnosis. Crusta minute granulosa, pulverulenta, aut quasi obsoleta, cinerascens ; 

 apothecia ad 1 mm. lata, semper elevata, saepius quasi stipitata, margine crasso, 

 albido instructa, epithecium nigrum rarius pallidior et rufo-nigricans, primum depressum 

 aut planum, demum convexum et margine altiori ; hypothecium gonidiis superimpositum ; 

 sporae octonae, hyalinae, simplices, '010- '012 mm. longae, '004- '005 mm. latae. 

 Habitat ad saxa vulcanica. 



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