Corolla are polypetalous, twisted, petaloid. Some authors have interpreted what appear to be petals as petaloid staminodes. They have flowers with petals and petaloid sepals (tepals) with compound pistils. The medial inverted pentagonal hexecontahedron (or midly petaloid ditriacontahedron) is a nonconvex isohedral polyhedron. This uncertainty of circumscription reflected a wider problem with the petaloid monocots in general. Petaloid monocots refers to the flowers having tepals which all resemble petals (petaloid). The styles divide towards the apex into petaloid branches; this is significant in pollination. The inner petaloid tepals are larger in size than the outer tepal. He then further divided the Petaloidea (petaloid monocots), into 32 orders, including the Amaryllideae. These organs are described as petaloid, for example, the sepals of hellebores. The fused infertile stamens form a large petaloid labellum that often functions to attract pollinators. Staminodes often present, free or connate, sometimes petaloid, sometimes enveloping the fertile stamens.