Cobra Lily. One of the most graceful of temperate plants, the cobra lily has leaves that are adapted to trapping flies. The flies are attracted to sugar secreted on the tongue-like projections. The sugar trails lead the insect up to a hole below the dome. Once inside the dome the windows flood the dome with light encouraging it to fly around. Eventually, the fly falls down the slippery tube. Unlike other pitcher plants, this species doesn't secrete enzymes into the fluid but relies on bacteria to digest the prey.