Article

Pilosella lactucella has been recorded for the first time for the Bulgarian flora. It grows in damp to wet subalpine meadows in the Rila Mts, at ca. 2250 m. A single population of about a thousand specimens has been observed, occupying an area of less than 0.5 ha. The recorded site is the south-easternmost locality of the species in Europe and is rather isolated. The ploidy level was estimated by flow cytometry and the species is a diploid. If the IUCN categories and criteria are applied at national level, the species would qualify for a Critically Endangered taxon under criterion B.