Persistence is the retention of plant organs, such as flowers, seeds, or leaves, after their normal function has been completed, in contrast with the shedding of deciduous organs after their purpose has been fulfilled. Absence or presence of persistent plant organs can be a helpful clue in plant identification, and may be one of many types of anatomical details noted in the species descriptions or dichotomous keys of plant identification guides. Many species of woody plants with persistent fruit provide an important food source for birds and other wildlife in winter.
Persistent strobilus of Equisetum arvense
Larix decidua has persistent seed cones.
Equisetum arvense has persistent strobili.
This Cornus florida cultivar has persistent fruit into winter.
Hamamelis virginiana, known as witch-hazel, common witch-hazel, American witch-hazel and beadwood, is a species of flowering shrub native to eastern North America, from Nova Scotia west to Minnesota, and south to central Florida to eastern Texas.
Hamamelis virginiana
Winter twig, showing elongate brown-pubescent terminal bud and persistent calyces
Empty seed pods in May, at least six months after seed dispersal
Flowers and flower buds in September