The flowers of Holothrix randii grow in a lax, cylindrical spike. Tiny hairs cover the flower stalk and floral bracts below the flowers. The inferior greenish ovaries give the impression of being pedicels, but the inflorescence is a spike, not a raceme.
The dorsal and lateral sepals are beige in colour and ovate in shape, attenuating to acute tips. They are quite small and inconspicuous, the white petals dominant in the flower appearance. The wedge-shaped lip as well as the lateral petals is fringed at their tips with numerous, long and thread-like lobes in true Holothrix fashion. An elaborately curved whitish spur can be seen at the back of the lip.
Flowering happens in a short spring blooming season (iSpot; Van Wyk and Malan, 1997; Lowrey and Wright, 1987).