Observation 107834: Hydnum umbilicatum Peck
When: 2012-08-29
No herbarium specimen

Notes: Under White Pine.

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What I call “umbilicatum”…
By: Dave W (Dave W)
2013-12-23 12:23:07 PST (-0800)

often shows the distinct concave belly button, but sometimes not, and I have found them growing together. I think sometimes the depression just fails to develop. The ones in this obs are a bit robust for umbilicatum.

Hi Dave
By: Irene Andersson (irenea)
2013-12-23 10:09:24 PST (-0800)

H. umbilicatum was originally described as a very tiny species with a “belly button” and globose spores (7-10 my).
What you have here might be closely related to the european ellipsosporum. An american clade has been found after DNA sequencing that is still unnamed and undescribed (ellipsoid spores, I guess?). But there are other undescribed species/forms in the rufescens group, so checking spores is a good start anyway.

Hi Irene.
By: Dave W (Dave W)
2013-12-23 05:23:11 PST (-0800)

These do exhibit fairly ambiguous macro-traits. The collection site was very near to a small patch of woods where I have been collecting umbilicatum for years. Generally, the smallish ones I get in coniferous woods seem to fall into the umbilicatum category. However, having just read the discussion here http://mushroomobserver.org/154265?q=1hRFx
I think it will be a good idea to look at spores from collections of Hydnum.

Created: 2012-08-30 19:21:50 PDT (-0700)
Last modified: 2013-12-23 04:49:39 PST (-0800)
Viewed: 47 times, last viewed: 2016-10-26 12:51:28 PDT (-0700)
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