One of the popular Tulip species is Tulipa clusiana, the Lady Tulip, originally from Turkey, Iran and nearby areas right through to the Himalayas. It has been such a popular species for so many years that it now grows from France and Spain through to Greece in the wild.
First reported in cultivation in the early 1600s, it is first mentioned by the Dutch botanist Carolus Clusius also known as Charles de l'Escluse, so this dates it even earlier. And yes it is named after him.
The flowers of the species are yellow with the outer perianth suffused or tinged with red, and white in the center, held erect and a little statuesque when first opening.
A number of varieties including Tulipa clusiana var. chrysantha with yellow interiors and var. cynthia with lemon yellow petals the outers are a paler red than the species.