Basic varieties in temperate latitudes include roses, tulips, irises, orchids and lilies. Van Gogh painted several landscapes with flowers, including roses, lilacs, irises, and sunflowers. Many designs depicted women's hair intertwined with stems of lilies, irises and other flowers. Researchers have tricked iris scanners using images generated from digital codes of stored irises. The bulbous, protruding eyes have yellow or copper coloured irises and horizontal slit-shaped pupils. Adults have a featherless red-orange face with pale brown irises and a yellow cere. Juveniles are duller and have brown irises and a brownish beak. The beak, feet and irises are bright yellow. The eyes are small, with dark brown irises. Adults have yellow to orange irises and juveniles have dark brown to black irises. Its eyes are large, with vertical pupils and yellowish-green irises. Their bodies are mainly green with blackish bills, gray feet and brown irises. The pupils are circular with yellow irises. The eyes are prominent with brown irises and horizontal, almond-shaped pupils. The artist Vincent van Gogh painted several famous pictures of irises.