Azolla is the most rare flower in the world. It does not grow on cliffs, nor is it the most beautiful flower in the world. But because it has not bloomed for thousands of years and is lost among the numerous duckweeds. The flowers are extremely small and have only two stamens, one female and one male.
Even if it blooms once in a thousand years, a small wave can humiliate it.
But everyone who sees it is impressed by it.