しいのとうかきのこでしょう
椎の灯火茸でしょう
shiino tōkakinokodeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of しいのともしびたけ

1. Probably a bioluminescent mushroom.

Polite
Presumptive
Conjecture
Usually Written in Kana