One case of Vavilovian mimicry is the gold-of-pleasure or false flax ("Camelina sativa linicola"), which looks much like the flax plant "Linum usitatissimum", and occurs with it in the field. The gold-of-pleasure is a descendant of "Camelina gabrata", a wild species; its subspecific name "linicola" means "the one that lives with flax". Weeding of the adult plant is impractical; instead they are separated based on properties of the seed. This is done by a winnowing machine, which in this case acts as an inanimate signal receiver. Seeds that are thrown the same distance as flax seeds have thus been selected for, making it near impossible to separate the seeds of these two species.