Involucropyrenium breussii (Verrucariaceae, lichen-forming Ascomycota), a new lichen species from chalk soil of Eastern Ukrainian steppes

Gromakova, A. B. and Kondratyuk, S. Y. (2017) Involucropyrenium breussii (Verrucariaceae, lichen-forming Ascomycota), a new lichen species from chalk soil of Eastern Ukrainian steppes. Acta Botanica Hungarica, 59 (3-4). pp. 335-342. ISSN 0236-6495

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Abstract

Involucropyrenium breussii A. B. Gromakova et S. Y. Kondr., a new lichen species for science, is described from eastern Ukraine, illustrated and compared with closely related taxa. It is similar to I. tremniacense from which it differs in having smaller thalline areoles, narrower rhizohyphae, a medullary layer differentiated in the centre of areoles, and longer ascospores. A short description of plant communities in which Involucropyrenium breussii was found in Ukrainian steppes with chalk outcrops is provided.

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