朝鮮 ちょうせん朝顔 あさがおでしょう
chōsen'asagaodeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 朝鮮朝顔

1. Probably a morning glory.; Possibly Korean morning glory.

Polite
Presumptive
Conjecture