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14 February 2017 Two new pinicolous Arthonia (Arthoniaceae; Arthoniomycetes) from the Delmarva Peninsula of the Atlantic Coastal Plain in eastern North America
James C. Lendemer, David Ray
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Abstract

Two new non-lichenized Arthonia are described from the branches and wood of pine trees (Pinus spp.) in the Coastal Plain of southeastern North America. Arthonia samdykeana is a characterized by its lack of photobiont, large irregularly shaped ascomata, and 6–9(–10–12)-celled ascospores that are macrocephallic. Arthonia gutberletiana is characterized by its lack of photobiont, black circular apothecia with persistent margins, hyaline 2-celled ascospores and occurrence on pine wood.

Copyright ©2017 by The American Bryological and Lichenological Society, Inc.
James C. Lendemer and David Ray "Two new pinicolous Arthonia (Arthoniaceae; Arthoniomycetes) from the Delmarva Peninsula of the Atlantic Coastal Plain in eastern North America," The Bryologist 120(1), 11-18, (14 February 2017). https://doi.org/10.1639/0007-2745-120.1.011
Received: 7 November 2016; Accepted: 1 January 2017; Published: 14 February 2017
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