1. Leaves

3. Leaf Anatomy

4. Typical Dicot Leaf X-Section
Cuticle
Epidermis
Palisade Parenchyma
Vascular bundles
Guard Cells
Spongy Parenchyma
Stoma

5. Typical Monocot Leaf X-Section
Bundle sheath cell
Midvein
Vein
Epidermis
Phloem
Xylem
Bulliform Cells
Stoma

6. Guard cells with chloroplasts
Leaf Stomata: Allow Gas Exchange
Guard cells with chloroplasts
Stomata in Zebrina leaf epidermis
Stoma
Subsidiary cells

7. Leaf Taxonomy

8. Leaf Arrangement on the Stem
Opposite: 2 leaves at a node, on opposite sides of the stem
Spiral: 1 leaf per node, with the second leaf being above the first but attached on the opposite side of the stem
Whorled: 3 or more leaves at a node

10. Monocot Leaf

11. Dicot Leaf Adaxial Epidermis Palisade mesophyll Spongy mesophyll
midvein
Abaxial
Epidermis
midrib

12. Leaf modifications Storage Spines Tendrils Petal-like
Lilikoi; Passiflora edulis
Common cactus finch, Galapagos
Storage
Petal-like
sepals
petals
Leaf/
bract

13. Indian Pipe
Monotropa uniflora

14. Venus fly trap Silver sword Brighami rockii Australian pine
Casuarina equisetifolia
Brighami rockii

15. What is going on? Tree shrew World’s largest pitcher plant
Nepenthes rajah