Part of R. Good's (1974, The Geography of the Flowering Plants) Boreal Realm, distinguished by about 300 endemic genera (see endemism). Although the flora as a whole has contributed few economic plants, it has furnished numerous garden species. Like all floras of Mediterranean-type climates, the Californian part of this region shows a marked degree of endemism, with 30–50 per cent of its species restricted to the state. See also floral province; floristic region.
Subjects: Plant Sciences and Forestry — Ecology and Conservation.