Rose of some "Rosa sericea", four). These may be long enough to be visible when viewed from above and appear as green points alternating with the rounded petals. There are multiple superior ovaries that develop into achenes. Roses are insect-pollinated in nature. The aggregate fruit of the rose is a berry-like structure called a rose hip. Many of the domestic cultivars do not produce hips, as the flowers are so tightly petalled that they do not provide access for pollination. The hips of most species are red, but a few (e.g. "Rosa pimpinellifolia") have dark purple to black hips. Each hip
Fruit tree forms trunk of less than . This is a traditional and popular form for apple trees. Bush trees are easy to maintain and bear fruit at a young age. Final height is between and , depending on which rootstock is used. Larger than the bush form, with trunks of or more. Standard trees can reach a total height of . They eventually produce high yields but, being large trees, are not easy to maintain. Similar to the bush form, although the main leader shoot is allowed to maintain its dominance, resulting in a pyramidal shape. A variant of the pyramid form