New nomenclatural combinations in Persicaria Miller and a new hybrid name in Rumex L.(Polygonaceae).

JR AKEROYD - Contributii Botanice, 2013 - search.ebscohost.com
… for names currently unavailable in Persicaria (bistorts and knotweeds), … X pseudolapathum
(Schur) DH Kent), was described originally from Transylvania (Basionym: Polygonum x …
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