A Disperis fanniniae flower seen from this angle shows its mouth or opening, the green lip that is flexed upwards in Disperis and only the rim of the dorsal sepal, the sac-like hood (that is mainly obscured here). The lip appendage is two-lobed, consistent with the flower structure of Disperis flowers in the subgenus Dryorkis.
The lateral petals are positioned partly inside the dorsal sepal. They are usually speckled purple or green.
The lateral sepals spread downwards, their tips acutely pointed. These sepals may be elaborately curved and become about 14 mm long.
Dryorkis species of the Disperis genus typically grow in forest shade. They are dry, producing no floral oils or nectar as pollinator enticement. Pollination of these plants is effected by their simulation of other flower species, the mimicry of neighbouring flowers for which many orchids are famous. Yellow tepal colouring suggesting pollen availability or simply flower size and visual impact or presence may also be used in marketing to restaurant customers among the insect populations and others sharing such tastes (Pooley, 1998; Manning, 2009; iSpot).