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 8 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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