Fly honeysuckle is a shrub with 10-15mm-long yellow, tubular or cup-shaped flowers with a red "saucer" base, stems are 2-4cm long. The red flower is base made up of oval leaf-like bracts and usually stays attached after the petals have dropped. Its fruits are shiny, purplish-black (at maturity) and develop in the red base of the flower. Its leaves are opposite, the largest are 9-12+ cm long, egg-shaped, gradually widening from a short petiole and concavely forming a sharp point at the tip, the undersides have shaggy, long, soft hairs.