It should be yellow canna.

https://en.wikipedia.org/wiki/Canna_indica

Yellow nana

Canna Lily

https://www.google.com/url?q=https://en.m.wikipedia.org/wiki/Canna_flaccida



Golden canna

Canna Lily

It is a yellow canna, its scientific name is Canna Amabilis, it is from Argentina, in my country Venezuela it is called "Cala", My grandfather has some.



your link: https://en.m.wikipedia.org/wiki/Canna_amabilis