Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

First report of Uredo manilensis in the Western Hemisphere.

Abstract

In December 2007, rust was observed on the leaves of landscape plants (i.e. Tabernaemontana divaricata) in Key West and Miami, Florida, USA. The rust has become prevalent and severely affects young and old leaves of plants in the landscape and in commercial nurseries. Leaf lesions begin as chlorotic flecks that expand into necrotic spots with orange-to-reddish brown, subepidermal uredinia; brown telia develop on the abaxial side of leaves. The pathogen was identified as Uredo manilensis. This is thought to be the first report of U. manilensis in the Western Hemisphere and the first time in a telial stage (provisionally Puccinia manilensis) has been recognized for the fungus.