The number of vascular plants includes about 1400 species registered only within the territory of Rila National Park, of them 34 are endemic to Bulgaria, including three restricted to Rila, and 89 — to the Balkans; 31 are Tertiary or pre-glacial relicts and 104 are glacial relicts. Notable Bulgarian endemic species include Rila primrose (Primula deorum) and rhapontic rhubarb (Rheum rhaponticum); taxa restricted to the Balkans include Bulgarian avens (Geum bulgaricum), yellow columbine (Aquilegia aurea), Bulgarian gentian (Gentianella bulgarica), Balkanian butterwort (Pinguicula balcanica), Crocus veluchensis, Dianthus microlepis, etc. The non-vascular flora includes 974 algae, 313 moss and 251 lichen species. The fungi are represented by 665 species, including 64 mushrooms listed in the Red Book of Bulgaria.