Synopsis Uttarakhand was carved out of Uttar Pradesh on 9 November 2000 as a separate state. The state is predominantly mountainous with exception in the south where plain areas occur. The state encompasses two phytogeographical regions, the Siwaliks and the Western Himalayas, a storehouse of plant wealth. The altitudinal variation and varied topography make the state floristically a rich area. The state has no published flora of its own, therefore it was decided to compile a checklist of flowering plants of the state. The present book enumerates more than 4700 species of flowering plants under 1523 genera and 223 families of angiosperms and gymnosperms. Hope it will be useful to researchers, foresters, and other interested in nature and will lead to the publication of a detailed flora.