Thamnea gracilis Oliv.

in J. Linn. Soc., Bot. 9: 332. 1866 (‘1867’); PillansinJ. S. African Bot. 13: 146. 1947

– Type: summit of Craggy Peak near Zwellendam, Burchell 7342 inherb. Kew (K-75874!, holo).

Placement of this species in Thamnea is based on morphological data as anther morphology, flower arrangement, absence of pedicels, and absence of cuticular rim; it was not included in the DNA analysis.