Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide


Boeremia exigua var. exigua
(leaf spot)



Boeremia exigua var. exigua (leaf spot)


  • Last modified
  • 25 November 2019
  • Datasheet Type(s)
  • Pest
  • Preferred Scientific Name
  • Boeremia exigua var. exigua
  • Preferred Common Name
  • leaf spot
  • Taxonomic Tree
  • Domain: Eukaryota
  •   Kingdom: Fungi
  •     Phylum: Ascomycota
  •       Subphylum: Pezizomycotina
  •         Class: Dothideomycetes
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Preferred Scientific Name

  • Boeremia exigua var. exigua (Desm.) Aveskamp, Gruyter & Verkley

Preferred Common Name

  • leaf spot

Other Scientific Names

  • Ascochyta asteris (Bres.) Gloyer
  • Ascochyta cyphomandrae Petch
  • Ascochyta hydrangeae G. Arnaud & M.A. Arnaud
  • Ascochyta nicotianae Pass.
  • Ascochyta phaseolorum Sacc.
  • Ascochyta sonchi (Sacc.) Grove
  • Phoma exigua f.sp. exigua (Foister) Malc. & E.G. Gray
  • Phoma exigua var. exigua Desm.
  • Phoma herbarum Westend.
  • Phoma herbarum f. brassicae Sacc.
  • Phoma herbarum f. hyoscyami Sacc.
  • Phoma herbarum f. schoberiae Sacc.
  • Phoma herbarum var. dulcamaricola Budák
  • Phoma linicola Naumov
  • Phoma solanicola Prillinger & Delacr.
  • Phoma solanophila Oudem.
  • Phoma tuberosa Melhus, Rosenbaum & E.S. Schultz
  • Phyllosticta decidua Ellis & Kellerm.
  • Phyllosticta hortorum Speg.
  • Phyllosticta mulgedii Davis
  • Phyllosticta sambuci Desm.
  • Phyllosticta vincae-majoris Allesch.
  • Phyllosticta vincae-minoris Bres. & K. Krieg.

International Common Names

  • English: leaf blotch; root rot; stem lesions; tuber gangrene; tuber rot

EPPO code

  • PHOMHE (Phoma herbarum)

Taxonomic Tree

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  • Domain: Eukaryota
  •     Kingdom: Fungi
  •         Phylum: Ascomycota
  •             Subphylum: Pezizomycotina
  •                 Class: Dothideomycetes
  •                     Subclass: Pleosporomycetidae
  •                         Order: Pleosporales
  •                             Genus: Boeremia
  •                                 Species: Boeremia exigua var. exigua

Distribution Table

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The distribution in this summary table is based on all the information available. When several references are cited, they may give conflicting information on the status. Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report.

Last updated: 10 Jan 2020
Continent/Country/Region Distribution Last Reported Origin First Reported Invasive Reference Notes


ChinaPresentCABI (Undated)Present based on regional distribution.
-ChongqingPresentFu JingYuan et al. (2013)


AustraliaPresentCABI (Undated)Present based on regional distribution.
-TasmaniaPresentJones et al. (2011)
-Western AustraliaPresentLi et al. (2012)

Growth Stages

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List of Symptoms/Signs

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SignLife StagesType
Leaves / necrotic areas
Roots / necrotic streaks or lesions
Roots / soft rot of cortex
Vegetative organs / internal rotting or discoloration
Vegetative organs / soft rot
Vegetative organs / surface lesions or discoloration
Whole plant / damping off


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Boerema GH, 1976. The Phoma species studied in culture by Dr. R.W.G. Dennis. Transactions of the British Mycological Society, 67(2):289-319

Boerema GH; Dorenbosch MMJ, 1973. The Phoma and Ascochyta species described by Wollenweber and Hochapfel in their study of fruit-rotting. Studies in Mycology, 3:1-50.

Fu JingYuan; Dou YanXia; Ma GuanHua; Chen GuoKang; Wang Yong; Xiao ChongGang, 2013. Survey on the kinds of fungal diseases on tobacco leaves in Chongqing. In: The Proceedings of Chinese Society of Plant Protection in 2013, Shandong, China, 22-25 October, 2013., China: Chinese Academy of Agricultural Sciences, 51-55.

Jones SJ; Hay FS; Harrington TC; Pethybridge SJ, 2011. First report of boeremia blight caused by Boeremia exigua var. exigua on pyrethrum in Australia. Plant Disease, 95(11):1478-1479.

Li YP; You MP; Finnegan PM; Khan TN; Lanoiselet V; Eyres N; Barbetti MJ, 2012. First report of black spot caused by Boeremia exigua var. exigua on field pea in Australia. Plant Disease, 96(1):148-149.

Marino RH; Mesquita JB; Andrade KVSde; Costa NAda; Amaral LA, 2008. Fungi incidence in Phaseolus vulgaris L. seeds from State of Sergipe. (Incidência de fungos em sementes de Phaseolus vulgaris L. provenientes do Estado de Sergipe.) Revista Brasileira de Ciências Agrárias, 3(1):26-30.

Martins TD; Menten JOM; Sanguino Â, 2009. Fungi associated with the seeds (Caryopses) of sugarcane: detection methods, incidence and relation between fungical incidence and seed production conditions. (Fungos associados às sementes (Cariopses) de cana-de-açúcar: métodos para detecção, incidência e relação entre incidência fúngica e ambiente de produção das sementes.) Summa Phytopathologica, 35(3):173-178.

Mohammed Yesuf; Sangchote S, 2005. Occurrence and distribution of major seedborne fungi associated with Phaseolus bean seeds in Ethiopia. Kasetsart Journal, Natural Sciences, 39(2):216-225.

Morgan-Jones G; Burch KB, 1988. Studies in the genus Phoma. XIII. Concerning Phoma exigua var. exigua, a cosmopolitan, ubiquitous fungus on diseased and dead plant material. Mycotaxon, 32:477-490

Smith IM; Dunez J; Phillips DH; Lelliott RA; Archer SA, 1988. European Handbook of Plant Diseases. London, UK: Blackwell Scientific.

Sutton BC, 1980. The Coelomycetes. Fungi imperfecti with pycnidia, acervuli and stromata. Wallingford, UK: CAB International.

Distribution Maps

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