One species of these plants releases trans-2-hexenal as part of an alarm response triggered by leaf damage. Dependence on extrafloral nectar from one species of these plants is induced by a chitinase, which inhibits the ability of a different species’s invertase to break down sucrose. The primarily herbivorous jumping spider Bagheera kiplingi eats nutrient-rich Beltian bodies made by these plants, which comprise the second-largest genus of the pea family, Fabaceae. One species of these plants engages in mutualism (-5[1])by using swollen thorns to house territorial (15[1])(*) ants. (-5[1])Gum arabic is secreted by these plants, (10[1])which release tannins to thwart (10[1])the prehensile (-5[1])blue tongues of reticulated giraffes. (-5[1])For 10 points, (10[1])name these (-5[1])plants whose large-canopied “umbrella thorn” variety is common on the African savannah. ■END■ (10[4]0[1])