Dropping off or disappearing early, as the calyx of a poppy, or the gills of a tadpole.
Generally used to describe leaves that last only one season.
shed at an early age, ie caducous leaves.
Quickly falling (as in leaves)
shed at an early stage of development; "most amphibians have caducous gills"; "the caducous calyx of a poppy"
any organ falling at a certain stage of development.
Falling off early in development, as in the sepals of some Papaveraceae.
a. (L. caducus, falling, from cadere, to fall) said of a plant part, such as a sepal, petal, or leaf, that falls off quickly or early.
Falling off at an early stage.