Which plants help bats to find themselves?

Some of the bats prefer nectar of plants, which plants use them for its own pollination. However for bats it is very complicated to locate some of the flowers, because they have a bad vision and only rely on echo-location. The plant named Marcgravia evenia has leaves of special form that have the shape of a plate, which allow bats to find them. Since this kind of shape allows the reflection of signals much more efficiently. 

IMAGE: frogstofall.f3h.com
SOURCE: http://news.sciencemag.org/sciencenow/2011/07/how-to-invite-bats-for-dinner.html