Meanwhile, sundews are active flypaper traps whose leaves undergo rapid acid growth, which is an expansion of individual cells as opposed to cell division.
The flypaper trap is based on a sticky mucilage, or glue.
The plant genera Drosera (Sundews), Pinguicula, and others have leaves studded with mucilage-secreting glands, and use a "flypaper trap" to capture insects.
The leaves are active flypaper traps: they capture prey by surrounding it.
As a result, they are grouped among the "passive flypaper traps" along with Pinguicula, Drosophyllum, Roridula, Stylidium and Triphyophyllum peltatum.
The model proposes that plant carnivory by snap-trap evolved from the flypaper traps driven by increasing prey size.
Such snares are termed "flypaper traps", but the trapping mechanism of sundews is often erroneously described as "passive".
These pitchers appear to function at least in part as flypaper traps, with the sticky inner walls trapping small flying insects above the surface of the fluid.
It has been suggested that the pitchers of this species function not only as pitfall traps but also as flypaper traps.
Plumbago and other species with glandular trichomes resemble the flypaper traps of Drosera and Drosophyllum.