Observation 34388: Resupinatus applicatus (Batsch) Gray

When: 2010-02-12

Collection location: Los Trancos Preserve, Palo Alto, California, USA [Click for map]

Who: Douglas Smith (douglas)

Specimen available

Found under CA bay, big leaf maple. Mushrooms pretty small, only 3-5 mm in size.

Adding some micro details.

The first micro-shot is of the gill edge at 1000x in KOH. Here there are plenty of basidia, but in between, at the same size there are pointed cystidia. These are rather short pointed cystidia.

The second micro-shot is of spores from the gill at 1000x in KOH. The ave spore : length – 4.64 +/- 0.36 (err 0.13) um, width – 4.37 +/- 0.23 um (err: 0.10) – q : 1.06 +/- 0.06, on 10 spores.

Looking at some sources, it looks like this agrees with Resupinatus applicatus fairly well. The spores for most are listed as small and globose to subglobose, so the size and shape match well there. The cystidia are more of a problem, some sources list the species as not having cystidia, some list it with different cystidia. At least in Funga Nordica they have pointed cystidia drawn there for the species, so that is at least some of a match. This species seems to be so little studied, that almost anything could be true…

It also doesn’t look like this species is obs. much in the western US. It is listed in the PNW keys on PLEUROTOID SPECIES in the Pacific Northwest. They also mention a confusion with Resupinatus striatulus, but it seems some call these a synonym? Don’t know, and I don’t really have more time to search on more sources of this one. If someone else wants to take over cleaning up the taxonomic details, feel free.

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Created: 2010-02-28 06:55:08 PST (-0800)
Last modified: 2010-02-28 06:55:08 PST (-0800)
Viewed: 115 times, last viewed: 2019-02-04 09:08:06 PST (-0800)
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