Key to Anthurium of Panama
 

1 a. Leaves palmately divided to the base, usually more than 3-lobed	KEY A
1 b. Leaves simple, sometimes 3-lobed (but not to the base).

	2 a. Leaf blades 3-lobed, the margins constricted near the base of the anterior lobe	KEY B
.	2 b. Leaf blades not 3-lobed

	3 a. Leaves dark glandular-punctate on one or both surfaces	KEY C
.	3 b. Leaves not dark glandular-punctate on either surface.

		4 a. Leaf blades cordate or subcordate at base with prominent posterior lobes	KEY D
		4 b. Leaf blades not cordate or subcordate at base	KEY E