Epithets
| Name | Description |
|---|---|
| yakushimanum |
of or from Yakushima, an island in southern Japan |
| yezoalpina |
from (the mountains of) Hokkaido |
| yezoensis |
from (the mountains of) Hokkaido |
| yuccifolium |
having Yucca-like leaves |
| yunnanense |
of or from Yunnan, China |