| Answer | Crossword Clue |
|---|---|
| sitka | as in sitka spruce, a tall North American spruce tree |
| ailanthus | A tall large-leaved deciduous tree that is widely grown as an ornamental or shade tree. Native to Asia and Australasia, it has been naturalized in North America and central and southern Europe |
| ailanthuses | A tall large-leaved deciduous tree that is widely grown as an ornamental or shade tree. Native to Asia and Australasia, it has been naturalized in North America and central and southern Europe |
