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Microthyrium pinophyllum (Hhn.) Petr., Annls mycol. 25: 326 (1927)

Calothyriella pinophylla Hhn., Annls mycol. 15(5): 372 (1917) [1918]

Description: Hyphae superficial, pale yellow, 12 m wide. Ascoma thyriothecioid, mainly epiphyllous, orbicular, up to 150 m diam., sometimes confluent; scutellum composed of wavy radiating rows of pale brown, irregularly quadrilateral cells 254 36 m; those surrounding the ostiole not forming a distinct collar, those at the margin elongated to form an irregular fringe; ostiole 68 m diam. Asci numerous, cylindrical to obclavate, 2832 811 m, 8-spored. Ascospores hyaline, 1-septate, ellipsoidal, 811 23 m, the upper cell longer and broader that the lower cell, bearing medianly six appendages in two tufts connected by a short dark thread, appendages longer than the spore
Anamorph unknown.

Keys:
The genus Microthyrium, Paul Kirk

Microthyriaceae, Microthyriales, Incertae sedis, Dothideomycetes, Ascomycota

FRDBI summary data (75 records)

Distribution Map from NBN Gateway

Distribution Map from GBIF Portal

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