Arboretum » Campus Plant Identification – Mead Hall » Mead Hall south side Mead Hall south side Pachypodium lamerei (Madagascar palm), Moringa ovalifolia (Ghost tree), Alluaudia dumosa, Didieria madagascarensis (Octopus tree), Euphorbia milii (Crown of thorns), Alluaudia montagnacii (Madagascar thorn tree)