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
Gooseberry introduction. Although usually placed as a subgenus within "Ribes", a few taxonomists treat "Grossularia" as a separate genus, although hybrids between gooseberry and blackcurrant (e.g., the jostaberry) are possible. The subgenus "Grossularia" differs somewhat from currants, chiefly in their spiny stems, and in that their flowers grow one to three together on short stems, not in racemes. It is one of several similar species in the subgenus "Grossularia"; for the other related species (e.g., North American gooseberry "Ribes hirtellum"), see the genus page "Ribes". The "goose" in "gooseberry" has usually been seen as a corruption of either the Dutch word