| Sandersonia aurantiaca is a liliaceous monocotyledon with a bell-shaped corolla formed from fused petals and sepals. |
| All three subspecies are white flowering with a tubular corolla and a long style that exserts the stigma from the corolla tube. |
| In the flowers, corolla, corona and anther structure are similar, but the shape of the pollen tetrads in the two genera is different. |
| These bees visited flowers in search of pollen, adopting a supine posture as they entered the corolla tube. |
| Contrast in spectral reflectance between the corona and corolla was evident only in Pachycarpus natalensis and Asclepias cucullata. |
| Their perigonium consists of two trimerous whorls of tepals, or conversely of a perianth comprising calyx and corolla. |
