By Letcher Peter M   McGee Peter A   Powell Martha J   in Canadian Journal of Botony

ISSN:1480-3305|82|10|1490-1500

NRC Research Press‎(2004)‎

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By Letcher Peter M.   Powell Martha J.   in Nova Hedwigia

ISSN:0029-5035|80|1-2|135-146

E. Schweizerbart'sche Verlagsbuchhandlung‎(2005)‎

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By Letcher Peter M.   Powell Martha J.   in Nova Hedwigia

ISSN:0029-5035|80|1-2|115-133

E. Schweizerbart'sche Verlagsbuchhandlung‎(2005)‎

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By Longcore Joyce E.   Letcher Peter M.   James Timothy Y.   in Mycotaxon

ISSN:2154-8889|118|1|433-440

Mycotaxon‎(2012)‎

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By Letcher Peter M.   Vélez Carlos G.   Schultz Sabina   Powell Martha J.   in Nova Hedwigia

ISSN:0029-5035|94|1|9-29

E. Schweizerbart'sche Verlagsbuchhandlung‎(2012)‎

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By Karpov Sergey A.   Letcher Peter M.   Mamkaeva Maria A.   Mamkaeva Kira A.   in Nova Hedwigia

ISSN:0029-5035|90|1-2|81-94

E. Schweizerbart'sche Verlagsbuchhandlung‎(2010)‎

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By Letcher Peter M.   Powell Martha J.   Chambers James G.   Longcore Joyce E.   Churchill Perry F.   Harris Phillip M.   in Canadian Journal of Botony

ISSN:1480-3305|83|12|1561-1573

NRC Research Press‎(2005)‎

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