| At the anthesis, a nectary is present at the base of the ovary and trichomes can be observed on the ovary epidermis. |
| As is now regarded as typical of bat-pollinated flowers, the corolla is sturdy and the nectary disk is large. |
| Saccate nectary at base of floral tube formed by partial fusion of labellum and column. |
| The nectary is supplied by a single vascular bundle comprising xylem and phloem. |
| Major morphological differences in the family are found in the type of inflorescences, and the shape and position of the nectary bracts. |
| Finally, nectar collects in the saccate nectary spur formed by the fusion of the margins of the labellum and the base of the column-foot. |
