rust (Puccinia punctiformis ) on Canada thistle (Cirsium arvense ) - 5443108

Puccinia punctiformis (F. Strauss) Röhl.

Host: Canada thistle (Cirsium arvense (L.) Scop.)
Descriptor: Sign
Description: Young shoots emerge with undersides of leaves and stem covered in pycnia which are later replaced with uredinia and telia
Image type: Field
Image location: State College, Pennsylvania, United States

Specimen Information

Specimen in collection: No
Specimen Condition:
Identification Method:

Photographer Information

Name: Steven Conaway
Organization: Penn State University
Country: United States

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Image Number: 5443108

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Creative Commons License    This work is licensed under a Creative Commons Attribution-Noncommercial 3.0 United States License.

Image Use:(?) You must attribute the work in the manner specified (but not in any way that suggests endorsement). You may not use this work for commercial purposes unless permission is granted by the photographer or copyright owner.

Image Citation:(?) Steven Conaway, Penn State University,

Node Affiliation: Bugwood - UGA

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Image uploaded on Monday, August 15, 2011
Image Information last updated on Wednesday, August 24, 2011