Sorry for the long post, it just shows that there is ambiguity with id ).

There are several other Lophodermium's from ericaceous hosts, which identification doesn't get clear results so far. They from leaves of Andromeda polifolia, Ledum palustre, Chamaedaphne calyculata and Oxycoccus palustris. I checked SMML db for the hosts, it showed next records: for Ledum (diff. species) Lophodermium maculare, L. orbiculare, L. sphaeroides; for Chamaedaphne - L. maculare, orbiculare; plus Minter (Fungi of Ukraine, Rhytismatales) reports  for Andromeda polifolia - L. intermissum; for Ledum - L. sphaeroides.

I studied a monograph for the genus by Tehon (1935), but he omitted several of those substrate-selected species since the types difficult to study (intermissum, sphaerioides, as well as oxycocci are excluded from this monograph).

Following the key, then, all my specimens go to Lophodermina (hysterothecia subcuticular). Specimens collected from Ledum, Andromeda, and Oxycoccus leaves were identified as L. melaleucum. But spores in mine are shorter. I assume, all these specimens collected from different hosts are one species; but i noticed also differences in paraphyses shape in Ledum collections. The type description of L. intermissum (from Andromeda) also fits with these collections. L. orbiculare has larger spore size. Good description of L. sphaeroides i was not able to find.

Collection from Chamaedaphne goes to L. autumnalis (reported in monograph for Abies). Beside host, construction of labile also differ; but my specimens were underdeveloped and observations could not be done completely. It is clear that it is another species (with much larger spores and asci comparatively with previous), and it was collected only from Chamaedaphne.

The last specimen turned to be Coccomyces, and description of C. duplicarioides (Sherwood, 1980) matches it well (also from Andromeda host).

There they will be posted, for the case if someone may help/be interested in further processing. Probably, i am missing also recent related monographs. Fresh collecting will be help too, i think, as these were not always in full size and color.

Lophodermium cf. melaleucum or intermissium

On upper and lower sides of dead leaves of Andromeda, Ledum, Oxycoccus.

Collection from Andromeda:
Hysterothecia ellipsoid to circular,  up to 0,6 mm, subcuticular, margin elevated (up to 200 mk high), operculum ellipsoid to circular, edge with yellowish (or hyaline, probably underdeveloped), hymenium gray (once yellowish), outer surface black.

Flanks from textura epidermoidea; pallisade layer well developed, light yellowish-brown, from prismatic arranged in columns cells (glued together), up to 5-6 cells in each column (30 x 5 mk); asci clavate, clamped, inamyloid, 79-88 x 6,4-10,2; paraphyses filiform, larger at base (2,5), about 1,5 mk otherwise, with many small guttules, circinate at upper part; spores needle-shaped, 24 (21,5-26) x 1,3 (1,1-1,5) (N=12).