Phyllosticta concava

Phyllosticta concava
	Saguaro National Park, Arizona, United States
Scientific classification
Kingdom:	Fungi
Division:	Ascomycota
Class:	Dothideomycetes
Order:	Botryosphaeriales
Family:	Botryosphaeriaceae
Genus:	Phyllosticta
Species:	P. concava
Binomial name
	Phyllosticta concava; Seaver (1922)

Last updated August 17, 2025

Phyllosticta concava, also known as opuntia dry rot^[1] or prickly pear brown spot, is a species of fungus that infects opuntia cactus, leaving discolored circular depressions in the pads.^[2]^[3] The species was first formally described by the mycologist Fred Jay Seaver in 1922.

References

↑ Pirone, Pascal P. (1978-03-14). Diseases and Pests of Ornamental Plants. John Wiley & Sons. ISBN 978-0-471-07249-2.
↑ Grant, Bonnie L. (2017-04-13). "Prickly Pear Leaf Spot: Treatment For Phyllosticta Fungus In Cactus". gardeningknowhow. Retrieved 2024-03-16.
↑ Kempken, F. (2002-06-12). Agricultural Applications. Springer Science & Business Media. p. 137. ISBN 978-3-540-42628-8.

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[1] Pirone, Pascal P. (1978-03-14). Diseases and Pests of Ornamental Plants. John Wiley & Sons. ISBN 978-0-471-07249-2.

[2] Grant, Bonnie L. (2017-04-13). "Prickly Pear Leaf Spot: Treatment For Phyllosticta Fungus In Cactus". gardeningknowhow. Retrieved 2024-03-16.

[3] Kempken, F. (2002-06-12). Agricultural Applications. Springer Science & Business Media. p. 137. ISBN 978-3-540-42628-8.

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