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Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. & Triebel D. (94-11-15). Data set reviewer(s): Kainz C. (01-01-16); to be published after submission; 94-11-15.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Phacopsis. Synonyms: Agyrium cephalodioides Nyl. 1866. Flora 49: 373; Parmeliaceae Zenker (1827).

Taxonomic Literature: Triebel D. & Rambold G. 1988. Cecidonia und Phacopsis
(Lecanorales): zwei lichenicole Pilzgattungen mit cecidogenen Arten.
Nova Hedwigia 47: 279-309.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Soon sessile, not constricted at the base, .6-.8 mm in diam.. Margin: Indistinct. Disk: Strongly convex, dark brown. Parathecium (proper excipulum): White. Amphithecium (thalline excipulum): Present; 10-15 µm wide. Epithecium: Apical cells slightly swollen; brown (light to medium). Hymenium: White or pale brown. Hypothecium: Pale brown or white. Hypothecial Extension: Absent.

Ascospores: c. 8 per ascus, 9-11-(12) µm long, (4)-5-7-(8) µm wide, obtuse; septa absent; wall thin, not ornamented.

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