Mycosphaerellales » Mycosphaerellaceae » Phacellium

Phacellium inhonestum

Phacellium inhonestum Bonord., in Rabenhorst, Fungi europ. exsicc., Edn 2, ser. 2: no. 288 (1860).

            Index Fungorum number: IF 204131; Facesoffungi number: FoF 11287, Fig. 1

Description: see Videira et al. (2017).

Material considered: see Videira et al. (2017).

Fig. 1 Phacellium annonae-cherimoliae (CUP 60731, holotype, re-drawn from Fig. 2 in Braun and

Crous 2008). a Conidiophores in a dense fascicle. b Conidiogenous cells. c Conidia. Scale bars = 10 µm.

 

Importance and distribution

Species of Phacellium are parasitic forming leaf spots. There are 29 Phacellium epithets in Index Fungorum (2022), but several species have been transferred to Graphium, Ramularia and Ramulaspera. Phacellium comprises fourteen species known on wide range of plants such as Alangium platanifolium (Cornaceae), Annona cherimola (Annonaceae), Brachybotrys paridiformis (Boraginaceae), Cerastium sp. (Caryophyllaceae), Comptonia peregrina (Myricaceae), Lathyrus pratensis (Fabaceae), Myosoton aquaticum (Caryophyllaceae), Myrica gale (Myricaceae), Sanguisorba sp. (Rosaceae), Stellaria alsine (Caryophyllaceae) and Turpinia megaphylla (Staphyleaceae). Phacellium seems to be host-specific as each species occurs on a specific host plant or genus. Phacellium is reported from several countries such as Asia (China, Russia, South Korea), Europe (Finland, Iceland, Norway, Poland, Romania, Sweden, Ukraine) and North America (Canada, Mexico).

 

References

Braun, U. (1990). Studies on Ramularia and allied genera (III). Nova Hedwigia, 50, 499-521.

Braun, U. (1998). A monograph of Cercosporella, Ramularia and allied genera (phytopathogenic hyphomycetes). Additions to host range and distribution. Schlechtendalia, 1, 41-43. https://doi.org/10.1016/S0007-1536(73)80011-7

Braun, U., & Crous, P.W. (2008) Cercosporoid hyphomycetes on hosts of the Annonaceae: Cercospora annonaceae and Isariopsis annonarum revisited Cercospora annonaceae and Isariopsis annonarum revisited. Mycotaxon, 105, 207-224.

Crous, P.W., Tanaka, K., Summerell, B.A., & Groenewald, J. (2011). Additions to the Mycosphaerella complex. IMA Fungus: The Global Mycological Journal, 2, 49-64. https://doi.org/10.5598/imafungus.2011.02.01.08

Videira, S. I. R., Groenewald, J. Z., Nakashima, C., Braun, U., Barreto, R. W., de Wit, P. J. G. M., & Crous, P. W. (2017). Mycosphaerellaceae - Chaos or clarity?. Studies in Mycology, 87, 257-421. https://doi.org/10.1016/j.simyco.2017.09.003

 

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