J.Holub (Hoppe) 1988 - Holub J (1988) Selected subspecies names from Richter, Plantae Europeae, Vol. 1, 1890. Folia Geobotanica et Phytotaxonomica 23(4): 383-415. doi: 10.1007/bf02853359.
There is no corrections for Carex flacca subsp. erythrostachys yet.