Observation 241317: Puccinia violae DC.

When: 2016-04-23

Collection location: Irwin, Pennsylvania, USA [Click for map]

Who: John Plischke (John Plischke)

No specimen available

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Proposed Names

57% (1)
Recognized by sight

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= Observer’s choice
= Current consensus

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Just found what I used for ID
By: John Plischke (John Plischke)
2016-06-09 20:51:18 PDT (-0700)

I deleted the link to the book that I used for the ID but just found it again
https://books.google.com/...
It is outdated

Arthur
By: Byrain
2016-06-09 20:39:57 PDT (-0700)

According to the Manual of Rusts in United States and Canada by Arthur other rust taxa that are recorded from Viola include.

Puccinia canadensis – Near Slkirk Mountains near Laggan and Glacier, BC.
Puccinia effusa – CA and Washington
Puccinia ellisiana – Pycnia and aecia only, uredia and telia on Poaceae. East of Rocky Mountains from Maine to Saskatechewan, southward to Florida and New Mexico, rare in West Indies and Mexico.
Puccinia fergussoni – High mountains from Southeastern Alaska to Colorado and Utah, also Europe and Japan.
Puccinia ornatula – British Columbia
Uromyces andropogonis – Pycnia and aecia only, uredia and telia on Poaceae. Connecticut to Indiana southward to Florida and Lousiana.

Granted, the book is from 1934 and the taxonomy and ranges could potentially be outdated even if there aren’t many other comprehensive North American rust monographs that are more recent.

Also, not trying to tell you how to do things, but with plant pathogens it often makes most sense to identify the host plant first. :)

Don’t Know
By: John Plischke (John Plischke)
2016-06-09 20:16:32 PDT (-0700)

I have not had a chance to look up the violet species yet. I was working on the parasite first.

Don’t Know
By: John Plischke (John Plischke)
2016-06-09 20:16:30 PDT (-0700)

I have not had a chance to look up the violet species yet. I was working on the parasite first.

Host?
By: Byrain
2016-06-09 20:11:18 PDT (-0700)

Do you know what kind of Viola?