Phyllactinia amelanchieris

Phyllactinia amelanchieris
Scientific classification
Kingdom:	Fungi
Division:	Ascomycota
Class:	Leotiomycetes
Order:	Erysiphales
Family:	Erysiphaceae
Genus:	Phyllactinia
Species:	P. amelanchieris
Binomial name
Phyllactinia amelanchieris M. Bradshaw & J.K. Mitch., 2025

Phyllactinia amelanchieris is a species of powdery mildew in the family Erysiphaceae. It is found in North America, where it affects the genus Amelanchier .

Description

The fungus forms a weak, very thin, often smooth coating on the undersides of leaves. P.amelanchieris, like most Erysiphaceae, is highly host-specific and infects only the genus Amelanchier . ^[1] Another species of powdery mildew also infects this genus: Podosphaera amelanchieris , which forms a thin, light, weak coating on host leaves, rarely distorting growth from the underside. ^[2]

Taxonomy

The fungus was formally described in 2025 by Michael Bradshaw and James Kameron Mitchell.

References

1. Bradshaw, Michael; Braun, Uwe; Khodaparast, Seyed Akbar; Mitchell, James K.; Crouch, Uma; Thomas, Jacklyn; Darsaraei, Hamideh; Pfister, Donald H. (2025-07-04). "Phylogeny and taxonomy of the genera of Erysiphaceae, part 7: Phyllactinieae" . Mycologia. 117 (4): 640–700. doi:10.1080/00275514.2025.2476375. ISSN   0027-5514. PMID   40258175.
2. Braun, Uwe; Cook, Roger T. A. (2012). Taxonomic manual of the Erysiphales (powdery mildews). CBS biodiversity series. Utrecht: CBS-KNAW fungal biodiversity centre. ISBN   978-90-70351-89-2.