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Oak by Mind Map: Oak

1. Oaks have spirally arranged leaves

2. An oak is a tree

3. There are approximately 600 extant species of oaks

4. North America contains the largest number of oak species

4.1. The second greatest center of oak diversity is China

5. some have serrated leaves

6. entire leaf with smooth margins

7. Many deciduous species are marcescent, not dropping dead leaves until spring

8. In spring, a single oak tree produces both male flowers (in the form of catkins) and small coon flowers.

9. The fruit is a nut called an acorn, borne in a cup-like structure known as a cupule

10. The live oaks are distinguished for being evergreen, but are not actually a distinct group and instead are dispersed across the genus.

11. Oak tree is a flowering plant.

12. Oakland is Land Of Oaks :D