Uromycladium

Uromycladium is a genus of rust fungi in the family Pileolariaceae. It was circumscribed by mycologist Daniel McAlpine in 1905. The genus was established by McAlpine for rusts on Acacia (Fabaceae, subfamily Mimosoideae) with teliospores that clustered at the top of a pedicel. The genus contains at least 11 species. Some of these species infect plants in the family Mimosoideae including Acacia, Paraserianthes and Falcataria. Most species are considered to be specific to only one host species of plant, such as Uromycladium simplex on Acacia pycnantha and Uromycladium falcatarium on Falcataria moluccana. Uromycladium tepperianum, on the other hand, has almost 100 known hosts including plants from several tribes of Mimosoideae. However, research suggests that this species may comprise several unrecognized taxa with narrower host ranges....read more on Wikipedia.