Book  (1998)  Page(s) 141.  
 
R. rugosa x polyantha                c. 1900
'the growth is vigorous and tree-like; the flowers are thin, with curious serrated margins and borne in terminal conical trusses; it is quite sterile.'
'A remarkable natural hybrid which originated here', but not given a cultivar name.
refs: Newry roses 39: 17 (1900); - no. 59: 39 (1903-1904); The Garden 64: 88 (1903).