Are there more species in genus Callitris or in the genus Salvia?
Callitris:  There are 16 recognized species in the genus, of which 13 are native to Australia and the other three ("C. neocaledonica, C. sulcata") native to New Caledonia. Salvia: Salvia is the largest genus of plants in the mint family, Lamiaceae, with nearly 1000 species of shrubs, herbaceous perennials, and annuals.
Salvia