Observation 174561: Humidicutis marginata var. olivacea (A.H. Sm. & Hesler) Singer
When: 2014-08-08
No herbarium specimen

Notes: NEMF foray.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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I don’t know anything about…
By: Dave W (Dave W)
2016-04-29 17:24:46 PDT (-0700)

the DNA of genus Hygrocybe. Sorry for the misunderstanding. I intended for the statement to be conditional… ie. “if” the DNA matches…

Thanks for the insight regarding these types of mushroom, Lokness.

Matching DNA?
By: Steve (Lokness)
2016-04-29 15:33:31 PDT (-0700)

The DNA results for some of the Waxcap groups have been notoriously divergent. There may be many species eventually to come out of these groups when the DNA is fully understood – including Humidicutis. So maybe what is now var. – may eventually be separate species?
If you look at the Humidicutis marginata var. olivacea under my observations, you will see Humidicutis that is different from the samples as shown in your book. The Humidicutis from the west coast has been determined in lab to indeed be a Humidicutis but did not match with better studied east coast varieties. Indeed; why should we think they might be the same species given the habitats are so different and there is such a huge country between the two Humidicutis groups?

Martin, the ones seen here…
By: Dave W (Dave W)
2016-04-29 11:42:31 PDT (-0700)

are basically a dead-ringer for the photo “B” in BRSB. The only reason I didn’t propose at “I’d call it that” is because I was unfamiliar with this species. Book doesn’t mention marginate gills.

Walt, so it’s a lumper/splitter thing. Well, I say more names means more fun! And if it’s true that all the marginata types have matching DNA, then this only makes the distinct macro-versions more fascinating.

Definitely has a color that is new to me
By: Martin Livezey (MLivezey)
2016-04-29 10:25:27 PDT (-0700)

The gills do not look marginate; Dave, I think Walt’s comment means you should propose a new species name for this! I have never seen it.

By: walt sturgeon (Mycowalt)
2016-04-29 07:18:32 PDT (-0700)

A couple years ago they stopped recognizing varieties of all species.

Walt, Index Fungorum…
By: Dave W (Dave W)
2016-04-29 05:12:35 PDT (-0700)

lumps the marginata varieties varieties into the general species name.

Created: 2014-08-19 05:30:23 PDT (-0700)
Last modified: 2016-04-29 11:45:43 PDT (-0700)
Viewed: 77 times, last viewed: 2016-10-26 22:12:47 PDT (-0700)
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