桐 means paulownia tree and is a JLPT N1 kanji. It has 10 strokes and uses the tree radical (木).
Stroke order · 10 strokes
On'yomi (音読み)
トウ、ドウ
Kun'yomi (訓読み)
きり
Radical
木 · tree
Strokes
10
How to remember 桐
A tree (木) whose wood is light yet sturdy — kiri. 桐 — traditional tansu (chests) are made from this wood; there was a custom of planting 桐 when a daughter was born.