Lonicera x purpusii Rehd. (L. fragrantissima Lindl. et Paxt. x L. standishii Jacq.) (Hort.) – An exceptional escape from cultivation. Recorded since 2006 in cracks of pavement at the National Botanic Garden in Meise (scattered self sown plants in the vicinity of planted specimens). See also Ronse (2011).
Selected references
Ronse A. (2011) 'Botanic garden escapes' from the living collections at the Botanic Garden. In: Hoste I. (ed.), The spontaneous flora of the National Botanic Garden of Belgium. Scripta Botanica Belgica 47: 219 p.