Danny’s DNA Discoveries – Amylocorticiales (Plicatura) of the PNW
The name of this order literally means "amyloid crust", and sure enough they are crust-like with amyloid spores. Most species are the most boring and hard to identify form of all - completely resupinate white crusts. The two most famous and interesting species, covered here, are whitish, bend away from the wood to form caps, and have some interesting folding going on underneath.
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.
Plicatura nivea EU - white or tan soft, finely velvety cap that is faintly zoned and bent away from the surface of the wood (effuso-reflexed), white underneath with unique, interesting "tuberculate-plicate" folds somewhere between wrinkles and teeth. AK DNA only differs within a couple of bp from EU sequences, and WA DNA differs by a couple more from AK, but I believe it all to be the same species.
Plicatura crispa EU (=Plicaturopsis crispa) - cap can be darker orange-brown and it is attached almost at a single point with not as much of it lying against the wood. Underneath there are almost gills, but they are wrinkly and veiny. It is a fairly close sister species of P. nivea, clearly in the same genus, and thus undeserving of its own genus Plicaturopsis in which some have placed it. ENA and EU DNA are the same, but we need local collections to sequence to make sure ours is the same species too.
Plicatura nivea © Danny Miller
Plicatura crispa © Christian Schwarz
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