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1 December 2016 Notes on the genus Usnea (lichenized Ascomycota, Parmeliaceae) IV
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Abstract

Clerc, P. 2016. Notes on the genus Usnea (lichenized Ascomycota, Parmeliaceae) IV. — Herzogia 29: 403–411.

Several species of the genus Usnea occurring supra-continentally are treated. Usnea barbata is new to the United Kingdom. Usnea entoviolata is new to Europe and a map of its known worldwide occurrence is given. Usnea perhispidella (syn. nov: U. eumitrioides), U. poliotrix, and U. subdasaea are new to North America. Usnea perplexans, a Himalayan taxon, is the correct name for U. lapponica, a widely occurring species in Europe and North America. Usnea aciculifera, U. hondoensis and U. pangiana are also discussed.

Philippe Clerc "Notes on the genus Usnea (lichenized Ascomycota, Parmeliaceae) IV," Herzogia 29(2), 403-411, (1 December 2016). https://doi.org/10.13158/heia.29.2.2016.403
Accepted: 1 July 2016; Published: 1 December 2016
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