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
The Rose Rent series, a beautiful widow rents part of her estate to the brothers of Shrewsbury Abbey for the modest sum of one rose from a certain bush, per year, and all are happy with this arrangement for three years. But then Brother Eluric, the young monk whose job it is to deliver the rose on the day of St. Winifred's translation (the pre-arranged rent-paying day) asks to be excused from the task (he finds he's starting to fall in love with the widow); he is later found murdered near the recently ruined rose rent bush. The abbey is thrown into a