ABSTRACT

Oredsson, A. 2004. Ytterligare ett äkta björnbär i Sverige: slokbjörnbär. [Another blackberry species new to Sweden: Rubus flaccidifolius.] – Svensk Bot. Tidskr. 98: 306–312. Uppsala. ISSN 0039-646X.

In 1956, the late Helge Rickman brought a Rubus specimen from a deciduous forest in Billesholm, NW Skåne in southernmost Sweden, to his herbarium and labelled it R. radula f. umbrosus. After his death, Rickman’s herbarium was donated to LU. Recently, the author rediscovered the site and sent a specimen to Herman Vannerom in Belgium, who suggested the name R. flaccidifolius P. J. Müll. in series Glandulosi, from which only R. pedemontanus is previously known in Sweden. Having studied both Müller’s collection in LAU and that of Jozef Van Winkel in BR, the author has arrived at the same opinion as Vannerom. The lectotype of R. flaccidifolius P. J. Müll., as published by J.-L. Moret in 1993, namely No. 3136 of Sudre’s revision of Müller’s collection at LAU, is considered valid. In Sweden, six other Rubus species occur mainly in NW Skåne, all probably remnants from a time when herds of cattle shaped the landscape and the climate was milder. The author’s opinion is that R. flaccidifolius is a relict of the same kind, the nearest occurrence of this species being found in the southernmost Netherlands.