Dearness: North American Fungi 



349 



10. Massarina Dryadis Rostr. Meddel. Groenl. 3 : 560. 1888. 



Plants of Dryas octopetala (L.) much discolored were collected 

 by Mr. F. Johansen, of the Can. Arc. Expedition, near the mouth 

 of Coronation Gulf, July, 1916. The oldest and most sered leaves 

 bore numerous, dark-brown, sphaeroid-depressed to conic, mem- 

 branaceous, partially immersed perithecia containing asci and 

 sporidia agreeing exactly with Rostrup's description. The ostiola, 

 however, instead of being " niveo " were merely whitish and that 

 only when more or less perforate. The sporidia — not reported by 

 Rostrup — were mostly about 30 X 15/* and the asci while mostly 

 about 100X33/* varied in length from 60 to 150/x. Rostrup's 

 fungus is listed in synopses of North American species of Mas- 

 saria but if Mr. Johansen's plant is the same, and it probably is, 

 the fungus is not a good Massaria. 



11. Leptosphaeria Gaultheriae sp. no v. 



Perithecia scattered, black, seated on the cortex and erumpent 

 through the thin cuticle or quite superficial where the latter is 

 thrown off, ovoid-conic to globose, 11 5-275 ^ in diameter. 

 Ostiola short, black, conic, shining. Asci broad-linear, 75-80 X 

 6. 5-7 fx, paraphyses present, simple or divided. Sporidia pale 

 brown, uniseriate, overlapping, 3-septate, larger in upper half, 

 12-16 X 5 p. 



On dead stems of Gaultheria Shallon Pursh, Vancouver Island, 

 August, 191 6, John Macoun 980. 



12. Asterina (Asterella) fumagina Dearn. & Barth. sp. nov. 



Perithecia epiphyllous, gregarious or nearly covering the leaf 

 with a sooty layer resembling Fumago; seated on dichotomous, 

 anastomosing mycelium of brown, septate hyphae, 5-6 fx thick ; 

 crowned with 1-3 pungent, dark-brown, rigid setae, 100-400 X 

 4-9 fx; rugose, dark-brown, globose, .3-. 5 mm. in diam. Asci 

 sessile, short-elliptic to pyriform, 45-60 X 2 5~30 wall 3 fx thick, 

 few to 10 in a perithecium. Sporidia hyaline, grumous-nucleate, 

 clavate-oblong, i-septate, variable in size, 15-25 X 8-12 /a, upper 

 cell larger than the lower. 



On living leaves of Panicum latifolium (?), Maricoa, Porto 

 Rico, Jan., 1913, F. L. Stevens. Ex. Herb, of E. Bartholomew 

 190. 



