Genista - The Grapefruit is a genus of plants belonging to the bean family. The shells are shrubs and shrubs usually with simple leaves and yellow flowers, sometimes thorny. There are about 100 species, especially in the Mediterranean. In the Czech Republic, dwarf horsetail and German helleborine are widespread, and in South Moravia, the helleborine horehound is introduced and the hellebore is draped or floated. Some species are grown as ornamental trees and alpine plants. Dyeing dye has been used in the past to color yellow substances.