sentences:  The flowers are arranged in heads of between forty and seventy-five with rusty-hairy or velvety, linear involucral bracts up to long at the base of the head.The flowers have a creamy yellow, hairy perianth or long, depending on subspecies, and a mostly glabrous pistil long or long.Flowering occurs from May to October and the fruit is a hairy, egg-shaped to elliptical follicle long.