A hotspot of endemism: Oreophytic Taraxacum species (Compositae, Crepidinae) in the mountains of Bulgaria Author Štěpánek, Jan 0000-0003-4038-1998 Institute of Botany of the Czech Academy of Sciences, CZ- 25243 Průhonice 1, Czech Republic. & jan. stepanek @ ibot. cas. cz; https: // orcid. org / 0000 - 0003 - 4038 - 1998 jan.stepanek@ibot.cas.cz Author Kirschner, Jan 0000-0002-6303-713X Institute of Botany of the Czech Academy of Sciences, CZ- 25243 Průhonice 1, Czech Republic. & jan. kirschner @ ibot. cas. cz; https: // orcid. org / 0000 - 0002 - 6303 - 713 X jan.kirschner@ibot.cas.cz text Phytotaxa 2022 2022-10-20 569 1 1 139 http://dx.doi.org/10.11646/phytotaxa.569.1.1 journal article 172051 10.11646/phytotaxa.569.1.1 f8f7b3a8-119f-438c-95d6-5d701a007727 1179-3163 7235182 Taraxacum ooststroomii van Soest (1966: 461) Type:— L 2593 !, holotype ( van Hattum & van Ooststroom 16193) Doll (1978: 642) :—“Wir fanden sie zerstreut um Borovez auf Weiden.“ Herbarium voucher specimen:—There is a single herbarium specimen from Bulgaria , labelled: Flora von Bulgarien , Rila-Gebirge, Borovez, Sessellift, 10 Jul [19]76, R . Doll [as Taraxacum ooststroomii ] ( JE , no. det. 19064). The herbarium sheet contains five plants, all with achenes, two of them with florets (pollen present, pollen grains iregular in size). The plants are not very well preserved. Interpretation:—The plants do not represent T. ooststroomii , a species probably confined to the Alps. The Bulgarian specimen belongs to T . sect. Obliqua , the group of T. chrysocephalum , but, due to the imperfect condition, cannot be evaluated in detail.