Palmately compound leaf

Definition

A palmately compound leaf is a type of compound leaf where all leaflets are attached at a single central point, resembling the shape of a hand with fingers spreading out. This arrangement contrasts with pinnately compound leaves, where leaflets are arranged along either side of a central axis.

5 Must Know Facts For Your Next Test

1. Palmately compound leaves have multiple leaflets radiating from one central point.
2. Examples of plants with palmately compound leaves include horse chestnuts and buckeyes.
3. The number of leaflets in palmately compound leaves can vary widely between species.
4. Palmate venation is often associated with this type of leaf structure, although it can also be present in simple leaves.
5. The central point from which the leaflets radiate is called the petiole junction or rachis.

Review Questions

• What is the defining characteristic of a palmately compound leaf?
• Name two plant species that have palmately compound leaves.
• How do palmately compound leaves differ from pinnately compound leaves?

Related terms

Simple Leaf: A single undivided blade connected to the stem by a petiole.

Pinnately Compound Leaf: A type of compound leaf where leaflets are arranged along both sides of a central axis.

Petiole: The stalk that attaches a leaf blade to the stem.