Here are some photographs of colourful roses from Tunis, I'm afraid I don't know the names of their precise species.
"A rose is a perennial plant of the genus Rosa, within the family Rosaceae. There are over 100 species. They form a group of erect shrubs, and climbing or trailing plants, with stems that are often armed with sharp prickles. Flowers are large and showy, in a number of colours from white through yellows and reds. Most species are native to Asia, with smaller numbers native to Europe, North America, and northwest Africa. Species, cultivars and hybrids are all widely grown for their beauty and fragrance. Rose plants range in size from compact, miniature roses, to climbers that can reach 7 meters in height. Species from different parts of the world easily hybridize, which has given rise to the many types of garden roses.
Roses are best known as ornamental plants grown for their flowers in the garden and sometimes indoors. They have been also used for commercial perfumery and commercial cut flower crops. Some are used as landscape plants, for hedging and for other utilitarian purposes such as game cover. They also have minor medicinal uses."
In Turkey, as well as enjoying roses for their perfume and their beauty, roses are used to make rose petal jam. If you are going to use roses to make jam then you need to make sure that the roses have not been sprayed with chemicals. Rose petal jam has a delicate flavour and is delicious. You can find many recipes on how to make rose petal jam on the internet. For your information, here is a website which explains how to make it http://www.wikihow.com/Make-Rose-Petal-Jam