Map Snapshot
23 Records
Status
Microscopic features must be confirmed to identify this species. Reports without microscopic details are speculative. Several species of Phragmidium are known from Maryland.
Description
Fruiting body: Distorts young stems with orange pustules; leaves with yellow spots above, orange pustules below. In late summer the orange pustules turn black; leaves may fall early (J. Solem, pers. comm.).
Relationships
On stems and leaves of wild and domestic roses (Rosa species) (J. Solem, pers. comm.).
Seasonality Snapshot
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Multiflora Rose Rust (pustules on lower leaf surface) in Howard Co., Maryland (5/11/2018).
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Media by
Joanne Solem.
Multiflora Rose Rust in Howard Co., Maryland (4/28/2012).
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Media by
Joanne Solem.
Multiflora Rose Rust hosting on Multiflora Rose in Harford Co., Maryland (5/9/2018).
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Media by
Josh Emm.
Multiflora Rose Rust infecting Multiflora Rose in Harford Co., Maryland (5/9/2018).
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Media by
Josh Emm.
Multiflora Rose Rust in Prince George's Co., Maryland (5/14/2020). (c) Hans Holbrook, some rights reserved (CC BY-NC).
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Media by
Hans Holbrook.
Multiflora Rose Rust in Prince George's Co., Maryland (4/28/2020). (c) Mitch, some rights reserved (CC BY-NC).
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Media by
Mitch via iNaturalist.
Multiflora Rose Rust in Baltimore City, Maryland (4/27/2020). (c) lunasearemedies, some rights reserved (CC BY-NC).
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lunasearemedies via iNaturalist.
Multiflora Rose Rust in Baltimore City, Maryland (4/27/2020). (c) lunasearemedies, some rights reserved (CC BY-NC).
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lunasearemedies via iNaturalist.
Multiflora Rose Rust urediniospores collected in Howard Co., Maryland (5/11/2018). Nearly round, thick-walled, brown; measured 21.2-27.6 x 19.0-25.3 microns.
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Media by
Robert Solem.
Multiflora Rose Rust in Harford Co., Maryland (4/27/2019).
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Media by
Jim Brighton.
Multiflora Rose Rust in Howard Co., Maryland (5/11/2018). (c) Joanne and Robert Solem, some rights reserved (CC BY-NC).
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Media by
Joanne Solem.