Two new blackberries for Thuringia: Rubus rynnestiganus, spec. nov. [Rubus ser. Glandulosi (Wimm. & Grab.) Focke] and Rubus stereacanthos var. parvulus, var. nov. [Rubus ser. Rhamnifolii (Bab.) Focke]
DOI:
https://doi.org/10.21248/kochia.v18.226Abstract
Rubus rynnestiganus is characterized by a glabrous primocane, ternate primocane leaves with palpably soft hairy undersides and mostly broad (often broader than tall), mucronulate teeth. The lateral leaflets are clearly lobed. This strictly nemophilous species grows on acidic sites in the submontane to high montane zone. The distribution area is restricted to the Thuringian Forest and its western foothills. A new dwarf form of R. stereacanthos is described from the area south of Eisenach. The species are illustrated by pictures, their distribution is shown by grid maps and detailed locality information.
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