| Man’yō Name | Tutuzi 管自、菌、管士、管仕、都追慈 （つつじ） |
| Modern Name | Yamatsutsuji 山躑躅（ヤマツツジ） |
| English Names | Torch or Kaempfer azalea |
| Scientific Name | F. Ericaceae Rhododendron kaempferi |
| Distribution | Hokkaido, Honshu, Shikoku, Kyushu |
| Appearance | |
| Seasonal Association |
Poems (9)
| MYS II: 185 MYS III: 434 MYS III: 443 | MYS VI: 971 MYS VII: 1188 | MYS IX: 1694 MYS X: 1905 | MYS XIII: 3305 MYS XIII: 3309 |
I think this would be an early summer plant, if it blooms in May and June like the Chinese rhododendron, but the only mention of it I can find in the Kokinshū is #495:
思ひいづるときはの山のいはつつじいはねばこそあれこひしき物を
http://www.wakapoetry.net/kks-xi-495/
That said, your notes on the Eikyū Hyakushu show that tsutsuji was included as a spring topic in that collection.
http://www.wakapoetry.net/poems/other-collections/eikyu-hyakushu/