Philodendron spiritus sancti, popularly known as the Holy Grail of plant ownership, was first described to science by George Bunting in 1987, from a plant he collected in 1982. The scientific name is When and How to Prune Peace Lilies Gardener's Path Photos: Watch out for these toxic succulents in your home Philodendron sp. 'Yellow Flame' (522W15) Where to Cut Pothos to Propagate Simple Steps With Pictures