Many people recognize and could easily identify Mayapple (Podophyllum peltatum) when they see it in the woods (from the midwest through the eastern portions of North America). Its leaves seem quite unique with their peltate attachment of the leaf to the stem. “Peltate” means “shield-shaped; a flat structure borne on a stalk attached to the lower surface rather than to the base or margin” according to Plant Identification Terminology. Here are a couple more Mayapple leaves.
Next, the Umbrella leaf.
How would you describe each of these leaves? Both are peltate — with veins running from the stalk attachment point to the leaf margins. Both have toothed margins. However, the Umbrella leaf margins definitely look “sharper” with more toothiness to them. And the Mayapple leaf looks more deeply lobed. In fact, those deep indentations frequently go almost to the center of the leaf — which can be clearly seen in the second image above.
Looking at the underside of the Mayapple leaf, we can see the strong veins along with the point of attachment of the leaf to the stalk.
Umbrella leaf has a similar look to the underside of its leaf. However, notice the size of the leaf. On a mature plant, the leaves can be two – four times the size of a healthy Mayapple leaf.
Here’s one more difference between these two plants. The Mayapple flower grows underneath the leaves. You have to lift the leaves up to see the flower (and later the fruit).
In contrast, the inflorescence of Umbrella leaf rises above the leaves.
This closer view of the Umbrella leaf inflorescence allows you to compare its individual flowers with the Mayapple flower shown above.
If you see these plants when they are not in flower (nor fruiting), you may have to stop and study the leaves a bit to decide which plant you are viewing. Here’s a final image to allow you to decide which leaves belong to Mayapple (Podophyllum peltatum) and which belong to Umbrella leaf (Diphylleia cymosa).