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Data Set Maintenance: Data set standard item. Data set author(s): Printzen C. Data set reviewer(s): Printzen C.; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Biatora. Biatoraceae A. Massal. ex Stiz. (1862); Lecanorineae; Lecanorales.

Type Information: Type specimen label data: U.S.A.: Alaska, Borough of Juneau, Auke Bay, E of Pt. Louisa, Tongass Nat. For., 58deg.23' N, 134deg.43' W, alt. 0-5 m, on Alnus rubra near upper edge of beach, 24.V.1991, Tønsberg 16300 (BG-holotype, US-isotype).

Taxonomic Literature: Printzen, C. & Tønsberg, T. 1999. The lichen genus Biatora in northwestern North America. Bryologist 102(4): 692-713.

Thallus: Crustose, granular. Thallus Outline: Soon disappearing. Upper Surface: Grey (whitish grey), light green, or white; not sorediate.

Margin: Not flexuose, indistinct. Exciple: White. Epithecium: Apical cells hyaline. Hymenium: (45)-(65) µm high. Hypothecium: Brown (faintly pinkish) or white.

Ascospores: Ellipsoid, (16.5)-20.9-24.9-(29.5) µm long, (4)-4.8-5.8-(6.5) µm wide; septa absent or present; 3-5-transversally septate; wall not constricted where the septum meets the spore wall.

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