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
A/ROSE space in RAM mirrored in the main system, and its own basic operating system. The first version of the system was ready for use in February 1988. A/ROSE was internally called MR-DOS (Multitasking Realtime Distributed Operating System), but Microsoft (developer of MS-DOS) did not appreciate the name and put pressure on Apple to change its name. Eric M. Trehus, a QA engineer on the Token Ring card that ran A/ROSE reportedly said "A/ROSE by any other name is still MR-DOS." A/ROSE is infamous for its esoteric purpose, which is generally not understood by Mac end users, as well as for