Mycosphaerella pomi (Pass.) Lindau 1897

Foodplant / spot causer
epiphyllous, immersed pycnidium of Phoma coelomycetous anamorph of Mycosphaerella pomi causes spots on live leaf of Pyrus
Remarks: season: 8-11

In Great Britain and/or Ireland:
Foodplant / spot causer
epiphyllous, immersed pycnidium of Phyllosticta coelomycetous anamorph of Mycosphaerella pomi causes spots on live leaf of Malus
Remarks: season: 8-11

Phyllosticta limitata Peck, Ann. Rep. N. Y
State Mus. 50: 115. 1897.
Spots usually circular or subcircular in form, more rarely Irregular, at first reddish-brown, becoming whitish or cinereous, the margin slightly elevated and distinct, the surrounding tissues more or less discolored, the spots visible on both sides of the leaf but more distinct on the upper side, reaching a diameter of 2-3 mm.; pycnidia numerous, quite evenly scattered over the infected spot, restricted to the upper side of the leaf; spores ellipsoid, at first hyaline, becoming smoky-brown, 3 X 4-5 /j..
On Malaceae :
Malus Malus (L.) Britton (Pyrus Malus I,.), New York, West Virginia.
Type locality: Westbury, Queens County, New York, on Pyrus Malus.
Distribution : New York and West Virginia.

Mycosphaerella pomi is a fungus in the Mycosphaerellaceae family.

It was first described by Giovanni Passerini in 1878 as Sphaerella pomi, and transferred to the genus, Mycosphaerella, in 1897 by Gustav Lindau. The species epithet, pomi, is the genitive of Latin, pomum ("apple") and refers to the fact that this is a fungus found on apples.