sentences:  Today 9 of the gardens' 18 hectares are under cultivation, and contain about 2500 taxa.Many of the species are s from the six Mediterranean climate zones of the world.Major collections include agaves, aloes, and salvia, as well as fine old specimens of "Araucaria cunninghamii" (planted 1832), "Casimiroa edulis" (1867), olive trees, "Olmediella betschleriana", and "Pinus canariensis" (1870).