Orange Rust Gymnoconia nitens (Schweinitz) F. Kern & Thurston  

Description:

Orange spore masses visible on undersides of leaves in May and June (J. Solem, pers. comm.).

Relationships:

Forms on blackberry species (Rubus spp.).

There are 31 records in the project database.

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Orange Rust in Anne Arundel Co., Maryland (5/13/2017). Photo by Bill Harms. (MBP list)

Orange Rust on rubus sp? in Talbot Co., Maryland (5/16/2015). Photo by Jim Brighton. (MBP list)

Orange Rust on Rubus leaves in Howard Co., Maryland (5/14/2011). Photo by Sue Muller. (MBP list)

Orange Rust in Anne Arundel Co., Maryland (5/20/2017). Photo by Bill Harms. (MBP list)

Orange Rust in Howard Co., Maryland (5/10/2017). Photo by Bill Harms. (MBP list)

Orange Rust on a Rubus leaf in Howard Co., Maryland (5/29/2016). Photo by Kevin Heffernan. (MBP list)

Orange Rust (pustules containing spores on ventral leaf surface) in Howard Co., Maryland (5/31/2016). Photo by Joanne Solem. (MBP list)

Orange Rust in Harford Co., Maryland (5/26/2018). Photo by Josh Emm. (MBP list)

Orange Rust in Caroline Co., Maryland (5/20/2018). Photo by Wayne Longbottom. (MBP list)

Teliospores from Orange Rust collected in Howard Co., Maryland (5/31/2016). Round, fairly vericulose, walls 1.5 μm thick, orange; measured 22.7-23.8 (25.2) X 20.4-22.8 (25.0) microns. Photo by Robert Solem. (MBP list)

Orange Rust in Baltimore Co., Maryland (5/20/2017). Photo by Emily Stanley. (MBP list)


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