PLATE IV. TYPES OF LEAVES. 



1. Black Cherry (simple). 



2. Common Locust (compound). 



3. Chestnut (alternate arrangement). 



4. Sugar Maple (opposite arrangement). 



5. White Pine (5-clustered) . 



6. Pitch Pine (3-clustered) . 



7. Jersey or Scrub Pine (2-clustered) . 



8. Larch (many clustered). 



9. Larch (many clustered at base; solitary on 



leading shoots). 



Drawings are about one-half natural size. 



10. Red Spruce (4-sided). 



11. Balsam Fir (flat and sessile). 



12. Hemlock (flat and stalked). 



13. Red Cedar (scale-like needles). 



14. Arbor Vitae (scale-like needles). 



15. Arbor Vitae (section enlarged showing glands 



on leaves). 



16. Red Cedar (awl-shaped needles). 



