Here's a possibility: Could the "pale aronatus" refer to the white variety of Anemone coronaria? This is one of the colors of the "poppy anemone" that is a wildflower. (They also have blue, red, and pink kinds, too.) The white type has white petals, (pale). and a bluish center. Sometimes the blue color even extends outward a bit into the petals themselves. Very pretty, and it is a wildflower that grows in fields and meadows. Maybe "aronatus" could actually be anemone. Just a thought...