 Adenanthos obovatus hybridises with A. detmoldii to produce A. × pamela. Known only from road verges in the Scott River region, it was first discovered in 1979, and it is now known from more than twenty individual plants. The discovery of it in such large numbers, together with its recognised horticultural potential, prompted Nelson to formally describe and name it in 1986. Morphologically it is intermediate between its parents; that is, taller than A. obovatus, with longer leaves and light red flowers. It is fertile, raising the possibility of the establishment of a hybrid swarm.
