Japanese Birch
Birch
シ
あずさ
杏 (アン, キョウ, コウ、あんず) Apricot
梓 (シ、あずさ) Japanese Birch, Birch
松 (ショウ、まつ) Pine, Pine Tree
杉 (すぎ) Cedar
柳 (リュウ、やなぎ) Willow
栃 (とち) Horse Chestnut
楓 (フウ、かえで) Maple
椎 (ツイ、しい, う, つち) Spine, Evergreen Beech
Perhaps a Japanese Birch 梓 is a spicy 辛 tree 木 because it's associated with sexy old-school woodblock prints.