Arguments for a narrow species concept in Rubus sect. Corylifolii
A detailed inventory of Rubus sect. Corylifolii from the province of Halland in southwestern Sweden has been performed and the chromosome number of all distinct taxa and deviating morphotypes has been determined using flow cytometry. Once putative hybrids between Corylifolii and R. caesius or R. idaeus are recognized, essentially all stands of Corylifolii in Halland can be satisfactorily identifie