Abstract
A severe rust infection was observed on the plantations of Oxalis corniculata (Oxalidaceae), commonly known as procumbent yellow sorrel, in Himachal Pradesh and Chandigarh, and on O. latifolia, known as garden pink-sorrel, in Uttarakhand in northern India. Detailed morphological examination of the diseased leaf samples was conducted, which confirmed the identity of the pathogen as Puccinia oxalidis. Rust symptoms on the host plants, along with taxonomic account of the phytopathogen are detailed in this paper. A taxonomic key of Puccinia species reported from Oxalis species is provided to facilitate its identity. In addition to understand its global host range, a worldwide host distribution of P. oxalidis is provided. The present study is the first detailed taxonomic account of P. oxalidis on Oxalis corniculata from Himachal Pradesh and Chandigarh in northern India. To the best of our knowledge, this is a new record of P. oxalidis from O. latifolia from India.
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