Ash Rust Puccinia sparganioidis Ellis & Bartholomew    Synonyms: Puccinia sparaganioidis (orth. var.), Puccinia sparganioides (orth. var.).
Kingdom Fungi   >   Phylum Basidiomycota   >   Class Pucciniomycetes   >   Order Pucciniales   >   Family Pucciniaceae   >   Genus Puccinia   

Description:

Yellow patches on leaves and twigs; yellow to orange pustules develop producing powdery spores.

Relationships:

Found on leaves, petioles, and twigs of ash trees (Fraxinus). Alternative hosts are various species of cordgrass (Sporobolus) and Seashore Saltgrass (Distichis spicata). (J. Solem, pers. comm.)

There are 15 records in the project database.

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Ash Rust on Green Ash in Harford Co., Maryland (6/16/2020). (c) apistopanchax, some rights reserved (CC BY-NC). Photo by Josh Emm. (MBP list)

Ash Rust on Green Ash in Harford Co., Maryland (6/16/2020). (c) apistopanchax, some rights reserved (CC BY-NC). Photo by Josh Emm. (MBP list)

Ash Rust (pustules on leaf petiole) in Howard Co., Maryland (5/25/2020). Verified by Jo Solem. Photo by Sue Muller. (MBP list)

Ash Rust in Howard Co., Maryland (5/31/2020). (c) Joanne and Robert Solem, some rights reserved (CC BY-NC). Photo by Joanne Solem. (MBP list)

Ash Rust in Howard Co., Maryland (5/31/2020). (c) Joanne and Robert Solem, some rights reserved (CC BY-NC). Photo by Joanne Solem. (MBP list)

Ash Rust (dorsal surface of leaf) in Howard Co., Maryland (5/31/2020). Photo by Joanne Solem. (MBP list)

Ash Rust (pustules on ventral surface of leaf) in Howard Co., Maryland (5/31/2020). Photo by Joanne Solem. (MBP list)

Spores of Ash Rust in Howard Co., Maryland (5/31/2020). (c) Joanne and Robert Solem, some rights reserved (CC BY-NC). Photo by Joanne Solem. (MBP list)

Spores collected from an Ash Rust specimen in Howard Co., Maryland (5/31/2020). Almost round, warty, hyaline/orangish; measured 29.3-28.6 x 29.9-30.3 microns. Photo by Robert Solem. (MBP list)


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