The future for cypress: selection of clones resistant to canker.
A brief outline of current, and future, research in Italy to develop varieties of cypress (Cupressus sempervirens) resistant to Seiridium cardinale. Three clones, C. sempervirens cv. Etruria and cv. Florentia and C. glabra [C. arizonica var. glabra] cv. Pegaso have been developed; all are ornamentals.