Balanites aegyptiaca
The W National Park constitutes the southern limit of tiger bush plateau distribution. Riverine and gallery forests are noted on the banks of the Mekrou River (with seasonal flows), and other tributaries of the Niger River. The plains have extensive coverage of grasses. In the savanna woodlands, grassland and stunted savanna woodlands, the plant species recorded are the "Terminalia avicennioides", "Anogeissus leiocarpus", hackberry "Clematis integrifolia" clematis, "Boscia senegalensis", "Balanites aegyptiaca", kapok tree ("Bombax costatum"), African locust "(Parkia biglobosa)", camel's foot tree, "Senna reticulata", baobab "(Adansonia digitata)", tamarind "(Tamarindus indica)", "Prosopis africana", "(Piliostigma reticulatum)". In the evergreen gallery forests, sausage tree, ("Kigelia africana") and African mahogany "(Khaya senegalensis)" are found. Orchid species recorded are the "Eulophia cucculata" and "Eulophia guineensis".