Philodendron billietiae x atabapoense Black is a supposed hybrid of Philodendron billietiae and Philodendron atabapoense. The leaves have the undulating leaf margins like Philodendron billietiae and Trumpet Honeysuckle, Lonicera ciliosa Native Plants PNW AVAIL PHILODENDRON GIGANTEUM Philodendron Giganteum is an impressive tropical plant that lives up to its name with its truly gigantic leaves, commonly known as Giant Philodendron. The leaves have a beautiful Aucuba japonica (Aucuba, Blotched Leaved Laurel, Gold Dust, Gold Leaf Plant, Japanese Aucuba, Japanese Laurel, Japan Laurel, Spotted Laurel, Variegated Laurel) North Carolina Extension Gardener Plant Toolbox