Does Hygrophila pinnatifida propagate via leaves?

I can't speak for that exact variety but I have Hygrophilia sp. tiger that several leaves broke off of when it first came and were planted, I left them floating in the tank and in a few weeks they had long white roots, and new tiny leaves started, this was several months ago, and they have not grown tall like the rest of the stem but stay compact, but its still growing. Give it several days/week+ you should see roots forming if its going to grow any.