Arboretum » Campus Plant Identification – Avery Hall and Benson Auditorium » Planter on south side of Benson Auditorium – Mangave ‘Macho Mocha’, Aeonium ‘Swartkop’ (Black rose), Euphorbia ‘Sticks On Fire’ Planter on south side of Benson Auditorium – Mangave ‘Macho Mocha’, Aeonium ‘Swartkop’ (Black rose), Euphorbia ‘Sticks On Fire’