Day 16 Oak Tree

2017-02-04  本文已影响0人  啊咪宝宝

A large crown and straight thick trunk constitute our classic impression of the oak tree. 

Oaks have spirally arranged leaves, with lobate margins in many species; some have serrated leaves or entire leaf with smooth margins. Also, the acorns contain tannic acid as do the leaves, which helps to guard from fungi and insects.

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