The text discusses different terms and parts for oranges. Oranges are typically divided into segments or slices when eaten. These segments are made up of juice-filled vesicles within the endocarp, which is the inner part of the orange. The outer layer of the orange, or exocarp, is responsible for its yellow color and contains glands. Each segment of an orange is called a carpel and is made up of smaller juice-filled sacs. This process of removing pith and membrane from citrus fruit is called supreming. The tangerine is commonly mistaken as the name of the species, but it is actually a propagation method using bud wood cuttings. The pith is thread-like and the orange's flesh is divided into equal segments or carpels.