A wonderful, unusual Philodendron with beautifully ribbed foliage, Philodendron acutifolium K.Krause, is a scandent aroid. Its leaf blades grow very large, are slightly coriaceous, rather glossy, elongate-oblanceolate. Primary lateral veins are verydistinctly prominent below. Midrib almost 5 mm wide at the base, strongly attenuating upwards, sunken above, distinctly prominent below. Secondary and tertiary veins numerous, more slender than primary veins, and parallel with them.  
 
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.