A beautiful long scandent herb producing elongated, lobed leaves on long petioles - Philodendron atabapoense G.S.Bunting. Petiole is terete or ventrally slightly convex in the upper part, pale green, spotted with wine-colour above and in the upper part,  pinkish-wine and slightly asperous, the lower part sheathed. Leaf blades are chartaceous, up to 60 cm long and 30 cm wide, outline triangular-ovate, very wide 2-5 cm above the base of the midrib, from a length of 15 cm upwards, quickly attenuating and concaved margined, after that, slightly attenuate and concave-margined up to the apex which is usually obtuse with an acumen; below from the place where it is very broad to halfway on the posterior lobe it is barely narrowed; Posterior lobes more or less oblong, obtusely rounded towards the apex or slightly angular, at halfway, one 6.7-8.3 cm and the other 10.3-12 cm wide, separated by a sinus 15-18 cm long, mitriform in outline.  
 
From the Modern Latin genus name Philodendron (Schott, 1830), from Greek philodendron, neuter of philodendros "loving trees," from philo- "loving" (see philo-) + dendron "tree" (from PIE *der-drew-, from root *deru- "to be firm, solid, steadfast," also forming words for "wood, tree"). The plant so called because it clings to trees.