Bergenia xschmidtii (Regel) Silva-Tar. (B. ciliata (Haw.) Sternb. x B. crassifolia) (Hybr.) – A rare escape from or, more likely, relic of cultivation or a throw-out. Possibly locally more or less persisting or naturalizing. In recent years it has been reliably recorded, for instance, from Oudenaarde.
This taxon combines ciliate leaf margins and inflorescence axes without stalked glands.
Similar records are available from Australia (Hosking & al. 2007). It is said to be the commonest taxon of Bergenia in gardens these days (Stace 2010) but there are surprisingly few reports of it as an escape.
Selected literature:
Hosking J.R., Conn B.J., Lepschi B.J.& Barker C.H. (2007) Plant species first recognised as naturalised for New South Wales in 2002 and 2003, with additional comments on species recognized as naturalised in 2000–2001. Cunninghamia 10(1): 139-166. [available online at: https://www.rbgsyd.nsw.gov.au/RoyalBotanicGarden/media/RBG/Science/Cunni...
Stace C. (2010) New flora of the British Isles, 3th ed.: XXXII + 1232 p. Cambridge University Press.