Sarah Duhon

Unido: 29.sep.2017 Última actividad: 22.feb.2020

I am an Environmental Science student at the University of Iowa and I love mushrooms.

The bulk of my research has been on Stereum, and specifically how different species have been handled historically and what DNA barcoding tells us about where species boundaries really lie in this genus.

Stereum ostrea in the eastern U.S. has a complex history, first considered a synonym of S. fasciatum, then vice versa, and S. ostrea eventually acquired S. lobatum as a synonym as well as many other less-known species. Through DNA barcoding it is evident that they are, in fact, separate species both morphologically and molecularly, and that a similar species S. subtomentosum is relatively common within their range as well, just adding to the confusion.

Are S. lobatum and fasciatum still considered S. ostrea currently? The simple answer is yes for now, until nomenclature changes, however as S. ostrea was described from Java in all likelihood it is a separate species not found in the U.S. S. fasciatum is described from North Carolina and S. lobatum is described from Surinam (South America).

My goal is to create a comprehensive molecular phylogeny for Stereum, and create resources for casual observers to recognize and correctly identify the phylogenetic species within Stereum, based on morphology and geographic region.

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