LICHENES. 5 



SqUAMARIA CHRYSOLEUC'A. 

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



Locality. — Granite Harbour, January 20th, 1902, on dark basic tufl'. 



Nutes. — This plant is an arctic and alpine species, i-ecorded by Dr. Fries 

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



•Lec ANOKA EPIBRYON. 

 Lecanora epibryon Ach. Tli. Fries, Lich. Scand., p. 2;5'.i. 



Locality. — Winter Harbour, December 15tb, l'J03, over mo.ss on earth. 



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

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

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



Lecanora expkctans. 

 (Plate I., 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 rufesceutia, discrete pruiuosa, primum thallo 

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

 distincto instructa, plana, saepe coutigua et angulosa ; hypothccium decolor, sed 

 gonidiis superimpositum ; sporae octonae, hyaliuae, simplices, "OH-'OIS mm. lougae 

 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 difi'erence 

 in the nature of the spores is revealed. It is nearly related to Lecanora epihyron, 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 (]uasi stipitata, margine crasso, 

 albido instructa, ei)itheciuin nigrum rarius pallidior et rufo-nigricaus, primum depressum 

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

 .sporae octonae, hyalinac, simplices, "OlO-'OTJ mm. longac, '004- "005 mm. latae. 

 Habitat ad saxa vulcanica. 



VOL. V. 2 E 



