Hi Ethan
Could you check if the hair dissolves in KOH?
I checked my collections at KOH, but I don't have enough of them to have opinions on this subject.
The collection that I designated as E. canescens had hair that did not dissolve in KOH. In E. strigosa, however, the hair immediately melted.
I wonder if this feature can be helpful in identification and will this reaction be confirmed when testing a larger number of collections?
Pictures of such collections I saw on Zotto disk and I wonder why I can't find information on this subject in literature.
A photo of the hair dissolved by KOH, I also posted on my website with this species (Photo 15-16):
http://www.grzyby-pk.pl/gat_e/gat_echinosphaeria_strigosa.php
Is this feature insignificant?
Is it found in all species of this genus or only in some? Or maybe such a reaction depends on other factors?
I would like to know the opinions of others on this topic?
Mirek

Hello Ethan
Thank you for checking reaction on KOH.
My experience with these mushrooms is small but I think your determination is correct.
I was hoping that someone more familiar with this kind would say something about the reaction.
Regards
Mirek

Hi Zotto
I also looked at Declercq's 2016 paper and that's why this feature made me wonder.
Andrew N. Miller maybe conducted such tests?
Mirek

Hi Zotto
Thank you, Zotto.
I thought about it because a few years ago, P. Perz mentioned such a reaction. In one of my collections, this reaction did not occur, which made me wonder.
Mirek

Hello all,

there are other microscopic features of Echinosphaeria I'm rather curious about, e.g. spore ornamentation. Bell & Mahoney (see below) mention finely punctate spores for their new E. incondita and E. leucolanosa, finely spinulose for E. strigosa and E. similistrigosa sp n, or longitudinally striate spores for E. striatispora sp n and E. stuppea.
Further they described new E. similistrigosa with intermediate spore size between canescens and strigosa (without knowing Declercq's species published in the same year). Perforated septum (E. medusa) or germ pores on overmature spores (E. minuta sp. n.) are other characters I never heard about in this genus.

Bell A., Mahoney D. (2016): Field studies in the Lasiosphaeriaceae and Helminthosphaeriaceae sensu lato. CBS Biodiversity Series 15. 124 p., Utrecht, CBS-KNAW Fungal Biodiversity Centre.

Viktorie

P.S. I only have a scanned copy of the book, the mentioned characters are well visible on drawings, not so much on microphotos. But that's probably due to low scanning resolution.