Less,
You should not be the one asking the question. And it does not warrant a response because it is only lekantar.
ZD,
You will notice that I said “to some extent”. Quinoa is not grown only in Peru. They checked out a specific production in Peru.
In addition, it is generally described (from Wikipedia) as “a grain crop grown primarily for its edible seeds”. Which also explains why there are poskim who say that the original minhag of kitniyos extends to quinoa as well. Which would not extend to potatoes.