Rose comprises an outer fleshy layer, the hypanthium, which contains 5–160 "seeds" (technically dry single-seeded fruits called achenes) embedded in a matrix of fine, but stiff, hairs. Rose hips of some species, especially the dog rose ("Rosa canina") and rugosa rose ("Rosa rugosa"), are very rich in vitamin C, among the richest sources of any plant. The hips are eaten by fruit-eating birds such as thrushes and waxwings, which then disperse the seeds in their droppings. Some birds, particularly finches, also eat the seeds. While the sharp objects along a rose stem are commonly called "thorns", they are technically prickles—outgrowths of
Boy with a Basket of Fruit leaves showing various disorders: a prominent virescent grape leaf with fungal spots and another with a white insect egg mass resembling that of the oblique banded leaf roller ("Choristoneura rosaceana"), and peach leaves with various spots. The analysis indicates that Caravaggio is being realistic, in capturing only what was in the fruit basket; he idealizes neither their ripeness nor their arrangement—yet almost miraculously, we are still drawn in to look at it; for the viewer it is very much a beautiful and exquisite subject. Boy with a Basket of Fruit Boy with a Basket of Fruit, c.1593, is a painting