© Andrew Parker

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Danny’s DNA Discoveries – Crassisporium of the PNW
by Danny Miller


abundant common uncommon rare - colour codes match my Pictorial Key and are my opinions and probably reflect my bias of living in W WA. Rare species may be locally common in certain places at certain times.

Click here to download the FASTA data of all my DNA sequences

This one spring to summer burn "Pholiota" has long been known to be different because of its dry cap, reddish-brown spore print and thick spore walls. It and similar species were placed in Pachylepyrium. Recent genetics showed that our species is quite different not only from Pholiota, but also from other Pachylepyrium, so a new genus (and eventually family) were erected for it and a couple other close relatives around the world - Crassisporium.

Crassisporium funariophilum EU ('Pachylepyrium' carbonicola EU) ('Pholiota' subangularis ID)

True "Pholiotas" found in burn sites don't have a dry cap, don't have the reddish tint to the brown spore print nor thick walled spores, and are not usually restricted to the spring and summer. Formerly called Pachylepyrium carbonicola. ITS DNA of the newer Idaho species Pholiota subangularis is only a couple of bp different than the EU type sequence of Crassisporium funariophilum, and now our local species is considered to be the same.

Crassisporium funariophilum © Andrew Parker


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