Excerpt - page 518: "... at other times. They are propagated from seed or cuttings. Leucadendronargenteum SILVER TREE One of South Africa's rarest and most beautiful ..."
Excerpt - page 67: "... three species of Proteaceae in southern African fynbos, Protea laurifolia, Leucadendronargenteum and Leucospermum conocarpodendron. ..."