Abstract
Dicheirinia antunesii is proposed as a new species on Ormosia sp. (Fabaceae) from Brazil. Teliospores are (58–)63(–66) μm wide, coarsely tuberculate with more or less conical warts up to 9 μm tall. The urediniospores have 2–3 supraequatorial germpores and cylindrical to vermiform peripheral paraphyses. This set of characters differentiates D. antunesii from other species of Dicheirinia.
The authors thank FAPERJ, FAPESP and CNPq in Brazil and NSF in United States of America for financial support.