× ''Reyllopia'' is a

hybrid Hybrid may refer to: Science * Hybrid (biology), an offspring resulting from cross-breeding ** Hybrid grape, grape varieties produced by cross-breeding two ''Vitis'' species ** Hybridity, the property of a hybrid plant which is a union of two diff ...

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

with a single known species, × ''Reyllopia conollyana'' (

synonym A synonym is a word, morpheme, or phrase that means precisely or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are a ...

''Fallopia'' × ''conollyana''), the Haringey knotweed or railway-yard knotweed. The species is a hybrid between Japanese knotweed (''

Reynoutria japonica ''Reynoutria japonica'', synonyms ''Fallopia japonica'' and ''Polygonum cuspidatum'', is a species of herbaceous perennial plant in the knotweed and buckwheat family Polygonaceae. Common names include Japanese knotweed and Asian knotweed. It is ...

'') and the Russian vine ('' Fallopia baldschuanica''). The only known wild British population was discovered ("new to science") by David Bevan at

Railway Fields Railway Fields is a Local Nature Reserve and a Site of Borough Importance for Nature Conservation, Grade I, in Harringay the London Borough of Haringey. About one hectare in area, it was a railway goods yard until 1967. The park also contain ...

in 1987.Haringey's Biodiversity Action Plan, September 2004. It was named in honour of Ann Conolly in 2001 for her 84th birthday. At the time, both parents were considered to be in the genus ''Fallopia''.

References

Polygonoideae Plants described in 2001 Plant nothogenera Monotypic Polygonaceae genera {{Polygonaceae-stub