October 31, 2019

In the last volume of Acta Soc. Bot. Pol. (88, 3), our two papers on the relict population of R. ferrugineum in the Karkonosze Mts. were published.

The papers were published together with our colleagues from the University of Wrocław. One contribution (Malicki et al. 2019) is focused on basic population characteristics including size of the population, its general demography, health of individuals, generative propagation ability, habitat conditions, and potential threats for this extremely small population which persists in a microtopographically controlled, treeless microrefugium. It provides a good background for further long-term observations. The second paper is a short communication reporting presence of Exobasidium rhododendri, a characteristic parasite of Rhododendron spp., accompanying R. ferrugineum across its distribution range including the isolated spot in the Karkonosze Nts. (Pusz et al. 2019). This is the first report of a native population of this fungus in Poland.

Earlier this year, the first paper on this population was published, presenting its phylogeographical history in the context of the whole species’ range (you can find the related note here).

Successive analyses of Rhododendron ferrugineum in the Karkonosze Mts., becoming a model for an isolated relict population, will follow soon.


Malicki M, Pusz W, Ronikier M, Suchan T, 2019. Population characteristics, habitat, and conservation status of Rhododendron ferrugineum L. (Ericaceae), a glacial relict new to Poland. Acta Societatis Botanicorum Poloniae 88(3): 3634. DOI

Pusz W, Malicki M, Patejuk K, Ronikier M, Suchan T, 2019. First record of Exobasidium rhododendri (Fuckel) C. E. Cramer in Poland. Acta Societatis Botanicorum Poloniae 88(3): 3632. DOI