| Spiraea salicifolia x douglasii = S. x pseudosalicifolia | GB, VC59 South Lancashire, Hightown | Vera Gordon | | 27/7/1994 | LIV |
| Spiraea salicifolia x douglasii = S. x pseudosalicifolia | GB, VC59 South Lancashire, Little Crosby | Vera Gordon | | 2/9/1995 | LIV |
| Spiraea salicifolia x douglasii = S. x pseudosalicifolia | GB, VC59 South Lancashire, Liverpool | Vera Gordon | | 29/7/1997 | LIV |
| Spiraea salicifolia x douglasii = S. x pseudosalicifolia | GB, VC59 South Lancashire, Liverpool,Everton | Vera Gordon | | 30/9/1997 | LIV |
| Spiraea salicifolia x douglasii = S. x pseudosalicifolia | GB, VC59 South Lancashire, Rainford | Vera Gordon | | 18/7/1985 | LIV |
| Spiraea salicifolia x douglasii = S. x pseudosalicifolia | GB, VC59 South Lancashire, Raven Meols | Vera Gordon | British & Irish Herbarium | 2/8/1998 | LIV |
| Spiraea salicifolia x douglasii = S. x pseudosalicifolia | GB, VC59 South Lancashire, Trawden | Vera Gordon | | 20/8/1987 | LIV |
| Spiraea salicifolia x douglasii = S. x pseudosalicifolia | GB, VC59 South Lancashire, Walton | Vera Gordon | | 16/7/1993 | LIV |
| Spiraea salicifolia x douglasii = S. x pseudosalicifolia | GB, VC60 West Lancashire, Barnacre Moor | Eric Fairgrieve Greenwood | | 26/8/1999 | LIV |
| Spiraea salicifolia x douglasii = S. x pseudosalicifolia | GB, VC60 West Lancashire, Claughton | Eric Fairgrieve Greenwood | | 12/7/1991 | LIV |
| Spiraea salicifolia x douglasii = S. x pseudosalicifolia | GB, VC60 West Lancashire, Lancaster | Leonard Albert Livermore | | 1990 | LIV |
| Spiraea salicifolia x douglasii = S. x pseudosalicifolia | GB, VC60 West Lancashire, Morecambe | Leonard Albert Livermore | | 1989 | LIV |
| Spiraea salicifolia x douglasii = S. x pseudosalicifolia | GB, VC60 West Lancashire, Morecambe | Leonard Albert Livermore | | 23/6/1989 | LIV |
| Spiraea salicifolia x douglasii = S. x pseudosalicifolia | GB, VC60 West Lancashire, Preston | Eric Fairgrieve Greenwood | | 20/8/1999 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC58 Cheshire, Bidston | Vera Gordon | British & Irish Herbarium | 25/7/1987 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC59 South Lancashire, Abram | Vera Gordon | | 18/8/1987 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC59 South Lancashire, Childwall | Vera Gordon | | 19/10/1995 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC59 South Lancashire, Croxteth | Vera Gordon | | 24/9/1994 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC59 South Lancashire, Formby | Vera Gordon | | 19/8/1995 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC59 South Lancashire, Formby,Freshfield | Vera Gordon | | 2/8/1995 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC59 South Lancashire, Freshfield | Vera Gordon | | 14/8/1997 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC59 South Lancashire, Kirkby | Vera Gordon | | 20/8/1991 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC59 South Lancashire, Litherland | Vera Gordon | | 25/8/1997 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC59 South Lancashire, Liverpool,Walton | Vera Gordon | | 21/9/1995 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC59 South Lancashire, Lostock | Vera Gordon | | 29/8/1987 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC59 South Lancashire, Manchester | Vera Gordon | | 15/7/1989 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC59 South Lancashire, Otterspool | Vera Gordon | | 15/7/1997 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC59 South Lancashire, Speke | Vera Gordon | Vera Gordon | 26/7/1999 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC59 South Lancashire, Whiston | Vera Gordon | Vera Gordon | 9/8/1997 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC60 West Lancashire, Abbeystead | Leonard Albert Livermore | | 1989 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC60 West Lancashire, Bolton le Sands | Leonard Albert Livermore | | 2/8/1986 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC60 West Lancashire, Bolton le Sands | Leonard Albert Livermore | | 2/8/1986 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC60 West Lancashire, Carnforth | Leonard Albert Livermore | | 1986 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC60 West Lancashire, Caton | Leonard Albert Livermore | | 1987 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC60 West Lancashire, Dolphinholme | Leonard Albert Livermore | | 1986 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC60 West Lancashire, Halton | Leonard Albert Livermore | | 18/6/1989 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC60 West Lancashire, Lancaster | Eric Fairgrieve Greenwood | | 27/7/1998 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC60 West Lancashire, Lancaster | Leonard Albert Livermore | | 17/7/1986 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC60 West Lancashire, Lancaster | Leonard Albert Livermore | | 1990 | LIV |
| Spiraea alba x douglasii = S. x billardii | GB, VC60 West Lancashire, Lancaster | Leonard Albert Livermore | | 27/7/1988 | LIV |