1980
Photographed at Cambridge University Botanic Gardens.

1980
Photographed at Shinfield Grange, University of Reading.

12th July 2008
Photographed at the Royal Botanic Gardens, Kew.

30th August 2008
Photographed at the Royal Horticultural Society's gardens, Wisley.

25th September 2009
Photographed at the Royal Horticultural Society's gardens, Wisley.