1. PaDIL Species Factsheet Scientific Name: Pseudocercospora cruenta (Sacc.) Deighton (Ascomycota: Dothideomycetes: Capnodiales: Mycosphaerellaceae) Common Name Pseudocercospora cruenta Live link: http://www.padil.gov.au/maf-border/Pest/Main/143061 Image Library New Zealand Biosecurity Live link: http://www.padil.gov.au/maf-border/ Partners for New Zealand Biosecurity image library Landcare Research — Manaaki Whenua http://www.landcareresearch.co.nz/ MPI (Ministry for Primary Industries) http://www.biosecurity.govt.nz/ 2. Species Information 2.1. Details Specimen Contact: Eric McKenzie - [email protected] Author: McKenzie, E. Citation: McKenzie, E. (2013) Pseudocercospora cruenta(Pseudocercospora cruenta)Updated on 4/17/2014 Available online: PaDIL - http://www.padil.gov.au Image Use: Free for use under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY- NC 4.0) 2.2. URL Live link: http://www.padil.gov.au/maf-border/Pest/Main/143061 2.3. Facets Commodity Overview: Field Crops and Pastures Commodity Type: Fabaceous produce Distribution: Oceania Groups: Fungi & Mushrooms Host Family: Fabaceae Pest Status: 2 NZ - Regulated pest Status: 0 NZ - Unknown 2.4. Other Names Cercospora cruenta Sacc. Cercospora vignae Ellis & Everh. Mycosphaerella cruenta Latham 2.5. Diagnostic Notes **Disease** Leaf spots circular or subcircular, usually indistinct, up to 15 mm diam., sometimes vein limited, reddish brown, often with a chlorotic halo. **Morphology** _Conidiophores_ emerging through stomata on both sides of leaf but more common on under surface, in fasicles, sometimes branched, pale olivaceous-brown, 10–75 × 2.5–5 µm, with small conidial scars. _Conidia_ 25–150 × 2–5 µm, pale olivaceous to olivaceous-brown, smooth, obclavate-cylindrical, 3–14- septate, sometimes slightly curved, apex rounded, basal cell narrowing and truncate. 2.6. References - Crous, P.W. & Braun, U. (2003). _Mycosphaerella and its anamorphs: 1. Names published in Cercospora and Passalora_. CBS Biodiversity Series 1. 571 pp. - Ellis, M.B. (1976). _More Dematiaceous Hyphomycetes_. Commonwealth Mycological Institute, Kew, Surrey, England, p. 269–270. - Hsieh, W.-H. & Goh, T.-K. (1990). _Cercospora and Similar Fungi from Taiwan_. Maw Chang Book Company, Taipei, pp. 185–187. - Mulder, J.L. & Holliday, P. (1975). _Cercospora cruenta. CMI Descriptions of Pathogenic Fungi and Bacteria 463_, 1–2. - Sivanesan, A. (1984). _The Bitunicate Ascomycetes and their anamorphs_. J. Cramer, Vaduz, pp. 205–209. 3. Diagnostic Images Pseudocercospora cruenta conidiophores Pseudocercospora cruenta conidiophores and conidia and conidia Conidiophores & Conidia: E. McKenzie Conidiophores & Conidia: E. McKenzie Landcare Research Landcare Research Pseudocercospora cruenta symptoms on Pseudocercospora cruenta symptoms on upper and lower surfaces of leaves of lower surface of cowpea leaves cowpea In Life: E. McKenzie Landcare Research In Life: E. McKenzie Landcare Research Results Generated: Tuesday, September 28, 2021 .