Simply click on the relevant highlighted text or hybrids name to see the
information and earliest references that have been collected for that plant.

To name everyone would take too long but we would particularly like to thank the following for their help in providing information, literary contribution, donation of plant material and support.

Gary Dunlop, all the staff, volunteers and students of the NCCPG, members of  NCCPG Devon Group, The Royal Horticultural Society, The National Trust, KAVB, The Royal Botanic Gardens at Kew and Edinburgh, The CCVS (Collections Vegetales Specialisees), Societe Nationale d'Horticulture de France, Conservatoire de Jardins Botaniques de Nancy, France; Jardin Botanique National de Belgique, Peter Fitt, Klaus Pfitzer, Philippa Browne, and Jac M. van Dijk.