The following points highlight the four major types of phytogeographic realms according to turrill. The types are: 1. The Northern Realm 2. The Paleotropical Realm 3. The Neo Tropical Realm 4. The Southern Realm. 1. The Northern Realm: The Northern Realm is subdivided into following 8 regions: i. Artie and Sub-artic Region: Includes Alaska, […]