Capnodiales » Mycosphaerellaceae » Ragnhildiana

Ragnhildiana agerati

Ragnhildiana agerati (F. Stevens) F. Stevens & Solheim, Mycologia 23(5): 402 (1931)

            ≡ Cercospora agerati F. Stevens, Bulletin of the Bernice P. Bishop Museum, Honolulu, Hawaii 19: 154 (1925)

Index Fungorum number: IF 158681; Facesoffungi number: FoF xxx, Fig. 1

Description: see Solheim (1931); Videira et al. (2017)

Material examined: see Solheim (1931); Videira et al. (2017)



Fig. 1. Ragnhildiana (redrawn from Solheim 1931) a Ragnhildiana agerati b Ragnhildiana Cyathulae. To the left, conidiophores and conidia; to the right, internal mycelium with external mycelium arising from it. Scale bars: a, b = 10 µm.


Importance and role

Importance of genus to ecosystem

Species of Ragnhildiana are pathogenic. They cause disease on host which shows as brown leaf spots. They are responsible for losses in pecan orchards and other ornamental crops (Poletto et al. 2020).


Industrial relevance and applications

There are currently no industrial applications of Ragnhildiana.


Quarantine significance

No biocontrol agent from Ragnhildiana has been reported. Ragnhildiana maybe a promising biocontrol agent. Further studies are needed.


Biochemical importance of the genus, chemical diversity or applications

The chemical diversity of Ragnhildiana has not been investigated yet.  Ragnhildiana may produce important enzymes and toxins which needs further studies.


Diversity of the genus

Ragnhildiana comprises six species known from eight host plants and five plant families namely Asteraceae, Caryophyllaceae, Juglandaceae, Ranunculaceae and Vitaceae.  Ragnhildiana was reported from Germany, New York, Texas, Thailand, Turkmenistan and Wisconsin. Many more species of Ragnhildiana can be discovered from future studies.





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