362
which once made up Gondwanaland, with tree-ferns massing in the stream bed. It seems that the entire world is coming eventually to Cornwall.
Tom's in-depth knowledge of the flora of western China in particular was illuminating for us. He explained that whereas much emphasis is put in the protection of rainforests internationally, in fact small "islands" of temperate conditions and vegetation within the tropics, where unique species exist, are also vulnerable: a single fire, for instance, could break the growth cycle for trees. Collection of seed is of great importance, but Chinese taxonomy is underfunded (compared to botanical research for medical purposes) and collection for propagation abroad is illegal according to CITES. Another of his legacies to the future will be a naturalistically planted Far Eastern temperate woodland, with acers, viburnums, sorbus, gordonia, and the rare Taiwania.
Tom also delighted and surprised the group by being able to take us to see a specimen of the camellia named after HK Governor Alexander Grantham, and another of Camellia hongkongensis, plus a Hogplum (Choerospondias), which he said grows around reservoirs in Hong Kong. Full marks for being the only garden visited to have a direct Hong Kong connection, and to Tom for his thoughtfulness in pointing it out.
Among great gardens, that of Caerhays Castle is one of the greatest, particularly for oriental plants. The gardens are set spectacularly on a hillside cupped around the castle, with their back turned to the little beach and bay nearby and the sea winds, and are filled with some of the oldest specimens of rhododendrons, magnolias and camellias in England. The architect of the gardens was John Charles Williams, “one of the towering figures of the Edwardian age” (M. Campbell-Culver). By the time he died in 1939, he had the best collection of rhododendrons in the country, and he had been responsible for crossing for the first time the two most important types of camellia, C. japonica (from Japan) and C. saluenensis. The latter had been discovered by George Forrest in the early part of the 20th century in the Salween area of China, and Williams was an early recipient of seed. The resulting hybrids, C. x williamsii, are now some of the most highly regarded of all, being hardy, profusely flowering, and tidily shedding their dead blooms. (The original