Actinidia five small petals. Most of the species are dioecious with separate male and female plants, but some are monoecious. The fruit is a large berry containing numerous small seeds; in most species, the fruit is edible. In particular, this genus is known for the species "Actinidia deliciosa", the kiwifruit or Chinese gooseberry, and for the hardy ornamental "A. kolomikta". "Actinidia" macrofossils have been recovered from the late Zanclean stage of Pliocene sites in Pocapaglia, Italy. The 40–60 species of "Actinidia" include: Kiwifruit is a cultivar group of "A. deliciosa", and hardy kiwi is the species "Actinidia arguta", which has small
Kiwifruit cultivar of golden kiwifruit, 'Gold3', has been found to be more disease-resistant and most growers have now changed to this cultivar. 'Gold3', marketed by Zespri as is not quite as sweet as the previous 'Hort16A', with a hint of tanginess, and lacks the usually slightly pointed tip of 'Hort16A'. Kiwifruit can be grown in most temperate climates with adequate summer heat. Where fuzzy kiwifruit ("A. deliciosa") is not hardy, other species can be grown as substitutes. Often in commercial farming, different breeds are used for rootstock, fruit bearing plants and pollinators. Therefore, the seeds produced are crossbreeds of their parents.