The most common species found in the " riparian forests " are : " Pterocarpus santalinoides " ( Papilionaceae ), " Cola laurifolia " ( Sterculiaceae ) and " Syzygium guineense " ( Myrtaceae ), out of which a few species are endemic and valuable.
22.
"' Dombeyoideae "'are a subfamily of the Malvaceae in the wide circumscription, as proposed by the APG . Most of the plants placed here were once assembled with more or less related genera in the paraphyletic Sterculiaceae; a lesser number were placed in the Tiliaceae which were also not monophyletic.
23.
Other tree families are occurring such as Pleurostylia spp . ( Celastraceae ), Foetidia spp . ( Lecythidaceae ), Olea europea subsp . africana ( Oleaceae ), Cossinia pinnata ( Sapindaceae ), Dombeya spp . ( Sterculiaceae ), and a variety of Sapotaceae species Sideroxylon boutonianum, Sideroxylon borbonicum spp . and Mimusops.
