Prunus Fruit is a drupe which has 3 components 1. Exocarp - skin 2. Mesocarp - fleshy part 3. Peaches are most important economically in this group and are 3rd overall behind oranges and apples. Fragaria ananassa - strawberry, New World, resulted from a corss between F. virginiana and F. chiloensis in a European garden.
Actual fruit is an achene, the fleshy part is derived from the receptacle.
Many local species of Rubus grow wild and are collected, quality of fruit is highly variable in wild plants. Currants are host to pine blister rust so they cannot be grown in the U.S. where pines are grown commercially. However, local growers can get around this problem by grafting cuttings from the above taxa to the rootstocks of the native local Vaccinium , which is adapted to grow in the local soils. Vaccinium oxycoccus - cranberries Cranberries are grown in boggy areas and are harvested by flooding the orchards, knocking the berries off the bushes and picking them off the surface of the water. NUTS Nuts are dry fruits where the edible portion is an embryo with enlarged cotyledons.