This is the fifth volume of the series Plants of Central Asia and covers the two very large families of order Tubiflorae – Labiatae and Scrophulariaceae – and two smaller Central Asian families Solanaceae and Verbenaceae.
Family Labiatae is represented in the studied territory by 41 genera and 157 species, of which only 1 genus and 22 species are endemic. The Central Asian regions of the former USSR (desert and desert-steppe Kazakhstan, Northern and Central Tien Shan and Eastern Pamir) would add to this list 7 more genera and about 60 species. Family Scrophulariaceae is represented in the studied territory by 18 genera and 152 species, of which 23 Species are endemic. Two more genera and about 60 species would add to this list from the Central Asian part of the former USSR.