Hello Stephen,

Perhaps this is a member of the Microascaceae. The habitat on decomposing seeds would be common for that family.  The conidiophores and hyphae remind me of Scedosporium or perhaps an early stage of a Graphium. Watch for ascomata of Petriella or Pseudallescheria in your cultures.

David

Thank you David, I will continue my investigatoion in that direction you kindly suggested and I think you are correct. There are many things which are matching, habitat, habit, variety of conidiophores (short, long, synnematous), spores with truncate bases and if I understood the annelid conidiophores with reference to wrinkled sides (seen in one of my images without congo red). The cottony colony with a dark centre is also diagnostic.

This genus is rather complex forming different reproductive structures - myself I was confused if I have a contamination of two species.

I examined my cultures by taking a film of mycelia from the surface with cellophane tape. I will investigate further down. Pure subcultures are growing fine too. Seems to be a hard one re determination to species! 

Thank you for replying and sharing your knowledege!


Important references

http://website.nbm-mnb.ca/mycologywebpages/Moulds/Scedosporium.html
http://thunderhouse4-yuri.blogspot.com/2012/10/scedosporium-prolificans.html