1979
Photographed at the Royal Botanic Gardens, Kew.
1980
Photographed at the Royal Botanic Gardens, Kew.
18th February 2006
Photographed at the Royal Horticultural Society's garden, Wisley.
26th June 2010
Photographed at the Royal Horticultural Society's garden, Wisley.
26th June 2010
Photographed at the Royal Horticultural Society's garden, Wisley.