There are many flower types in Gesneria, but most of the species readily available in horticulture are characterized by red tubular flowers and rosette habits (e.g., G. reticulata and G. cuneifolia).
The shrub habit of Gesneria is rare in cultivation, and the flowers of these species are not typical of material that is more readily available. Many shrubs of Gesneria have campanulate (bell-shaped) flowers, including a number that that are coriaceous (leathery). The outer surface of these shrubby species’ flowers appears waxy because they are covered with resin deposits. A selection of campanulate corollas with resin deposits is featured below; these include three with another character of many Gesneria flowers, the presence of fimbriations along the margins of the corolla lobes. Below these is a selection of campanulate corollas without resin deposits.