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Biology 220: Plant Classification


Welcome to the CSM Library research guide for Biology 220, focusing on plant classification.


Plant Classification & Morphology

picture of leaf shapes

   Figure 1.Leaf-shape variation: Illustration showing various leaf shapes. (a) Simple leaf with a single blade and petiole. (b) Peltate leaf. The insertion point of the petiole (dashed line) occurs on the underside of the leaf. (c) Compound leaf. A compound leaf has multiple blade units called leaflets. (d) Palmately compound leaf. Each leaf blade radiates out from the petiole. 

Image from the Access Science Database, entry on "Regulation of leaf shape."

Click on the tab above called Articles & Databases to see more like this.

This guide was originally created by...

Lisa Velarde

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