Fungi 13 c 



Dothidea bullulata Berk, was found on unnamed leaves by H. C. Hart on 

 the Nares expedition. The only record for this species. 



Dothidella betulina (Ft.) has been found at more than one station in both 

 Greenland and Alaska. Both this and Phyllachora graminis (Pers.) are likely 

 existent on their respective hosts here and there throughout the Canadian arctic 

 regions. 



HYSTERIACEAE. 



Lophodermium arundinaceutn (Schraed.) Chev. 

 L. culmigenum Fr. 



On Festuca rubra L. var. arenaria Fr. Bernard harbour, June 10, 1916. 



On Elymus mollis Trin. Port Epworth, Coronation gulf, July 18, 1915, 

 J. R. Cox and J. J. O'Neill, 91350. 



On Elymus sp. Chantry island, June 17, 1916. 



Ascospores linear, mostly about 55 x 2 ju. 



In this family two species are named in the Alaska list (Harriman expedi- 

 tion) and eleven in the Greenland lists. Mr. H. G. Simmons collected two in 

 EUesmere land, the one named above, and Lophodermium maculare (Fr.) on 

 Myrtillus uliginosus. 



STICTIDACEAE. 



Propolis angulosa Karst.? 



On a fragment of bark of Salix, probably Richardsonii Hook. Sadlerochit 

 river, Camden bay, November, 1913. 



This attractive fungus is not mature enough for certain determination. It 

 is immersed in the parenchyma of its host and has the gray-green hymenium of 

 P angulosa. The margin of whitish, triangular laciniae imparts to the apothecia 

 a stellate appearance. 



There are six Stictids in the Greenland lists but the family is unrepresented 

 in the other American arctic lists consulted. 



PEZIZACEAE. 



Scleroderris fuliginosa (Fr.) Karst. 



On branchlets of Salix Richardsonii Hook. Fifty miles up the Sadlerochit 

 river, Camden bay, Nov. ember 13, 1913. 



On Salix sp. On tundra southwest of Collinson point, June 7, 1914. Asso- 

 ciated with Mastomyces proboscidea (Fr.) Sacc. 



Apothecia nearly black, densely gregarious and cespitose. Ascospores 60 

 -75 fi long. 



This species seems to be common on willows in northern Europe. The only 

 other American collection I have seen was made by Dr. House, on Bald mountain 

 in New York State. 



Not many of the Pezizinae are directly parasitic, at least in their ascigerous 

 stage, but Rostrup has proved that in Denmark, where he found Scleroderris fuli- 

 ginosa on several species of willow, it is truly parasitic and that it killed affected 

 branches in a short time. 



In Mr. Johansen's collection at Collinson point a few pycnidia of the 

 conidial stage were observed on the same branches with the mature plants. 

 One of the branches bore a thin crustose lichen with orange, peziza-like apothecia 

 which R. S. Wilhams determined to be Caloplaca cerina (Ehrh.) Zahlb. 



Peziza micropus Pers. var. flavida Phil. 



Growing upon and under old sacks along the pond behind Teller, July 31, 

 1913. 



