MNN - Mother Nature Network

Most flowers are made to smell delightful — all the better to lure in pollinators, such as bees. The pollinators then get to sip on the flowers' sweet nectar, while the plants, in turn, get fertilized. But not every potential pollinator can be seduced by a sweet fragrance. Some plants have evolved specialized scents to attract some of nature's less-than-romantic insects. Flies, for instance, make for effective pollinators just like bees do — the only catch being that flies aren't attracted to sweet smells. Here are nine flowers you wouldn't want to accidentally include in your beloved's next Valentine's Day bouquet.