Phaedranassa tunguraguae is a species of plant that is endemic to Ecuador. Its natural habitats are subtropical or tropical moist montane forests and subtropical or tropical dry shrubland. It is threatened by habitat loss.
This species is self-compatible.
It was first published by Pierfelice Ravenna in 1969.
It may be pollinated by hummingbirds.
The IUCN conservation status is endangered (EN).