8 



Mycologia 



On Gonzalagitnia spicata. Jajome Alto, 840^ (type), El Alto 

 de la Banderas, /djd. 



The characteristic appendages remind one strongly of the so- 

 called chitinous appendages on certain Meliolas, e. g., M. puig- 

 garii. They differ decidedly from true setae. In most cases 

 there is only one on a perithecium, rarely so many as three. The 

 perithecial wall is translucent and through it may be recognized 

 the asci and even the spores and their septation. There is only 

 one mature ascus but by crushing the perithecium the presence of 

 other asci in earlier stages of development may be shown. 



Mycosphaerella subastoma sp. nov. 



Figs. 13, 14, 15 



Spots brown, long, narrow when young, 1-2 mm. wide, 3-4 

 mm. long, limited laterally by veins ; later by coalescence and 

 spreading involving whole leaf segments. Perithecia 125 ^u, in 

 diameter, solitary or grouped in large clusters of 2-40, dark- 

 brown to black, globose, subepidermal, with a short beak reach- 

 ing into the stomata ; ostiole subastomal, definite, 20-30^0, in 

 diameter. Asci 8-spored, 47 X 20 jx, apex strongly thickened. 

 Spores long, narrow, 22-24 X 4/^1, hyaline. 



On Aneimia adiantifolia. Dos. Bocas., 8058 (type). 



The three striking characters of this species are : the location 

 of the ostioles directly under the stomata, the grouping of the 

 perithecia, and the limitation of the fungus by the veins. The 

 fungus develops strictly subepidermally and even at maturity 

 does not become erumpent, liberating the spores by way of the 

 stomata. The fungus differs markedly in essential characters 

 from the several species previously described on ferns. 



Mycosphaerella tyrolensis (Auer.) Lind. 



Sphaerella tyrolensis Auer. on Gymnogramme calomelanos 



Barros, 140 



Very numerous, small, 1-3 mm., tan-colored spots are pro- 

 duced on the host and these spots are thickly studded with the 

 minute perithecia. Numerous " Sphaerellas " are recorded on 

 the Pteridophytes, but all disagree with the specimens under dis- 



