Calochortus luteus var. citrinus Mariposa pratensis Mariposa superba Calochortus luteus var. robustus Calochortus pratensis Calochortus superbus var. pratensis Calochortus venustus var. citrinus Calochortus venustus var. lilacinus
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024