Observation 34603: Leptogium saturninum (Dickson) Nyl.

When: 2003-07-19

Collection location: Seneca State Forest, West Virginia, USA [Click for map]

Who: walt sturgeon (Mycowalt)

No specimen available

I don’t think this is Tremella foliacea. It was on wood in a mixed forest.

[admin – Sat Aug 14 02:05:51 +0000 2010]: Changed location name from ‘Seneca St Forest WV’ to ‘Seneca State Forest, West Virginia, USA


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You’ve convinced me, zaca
By: Jason Hollinger (jason)
2014-02-19 22:19:32 PST (-0800)

I think I can convince myself now that there really are both isidia and thin tomentum. Moreover, I looked at all my own photos, and sure enough, specimens in moist areas do often grow with the same Tremella-like habit and have virtually invisible tomentum. Thanks for making me take another look at it!

What a tricky photo. Good on you for getting it right off.

[EDIT: And good job, Walt, finding it. Apparently it’s an unusual find in that area, and a beautiful specimen to boot.]

About what one can see in the photo
By: zaca
2014-02-19 20:16:40 PST (-0800)

At the top there three (focused) lobes; The one in the middle, which is rolled, shows white tomentum; Moreover, there is another feature that tremelloide fungi don´t have: there are some villi at the margin of some lobes, good visible on the lobe on the center-left which directly receives the light; some other lobes also have some villi on the underside.

This does resemble Leptogium saturninum but…
By: Jason Hollinger (jason)
2014-02-19 16:36:27 PST (-0800)

I don’t see the tomentum underneath, and… I was going to say it doesn’t occur out east, but I see a few reports, Michigan, Georgia, Tennessee. I had no idea… Still, there should be visible isidia and tomentum. And it should be somewhat more adnate to the surface. I would be surprised if this were a lichen. That’s my two cents!

By: walt sturgeon (Mycowalt)
2014-02-19 08:16:53 PST (-0800)


By: Richard Kneal (bloodworm)
2014-02-18 17:42:29 PST (-0800)

i love the old-school film quality to this photo.

By: Richard Kneal (bloodworm)
2014-02-18 17:31:16 PST (-0800)

i’ve seen this happen to Auricularia in Tenn.
not saying that’s what it is…but, the prospect of Tremella, might not be far off.


jelly lichen?
By: Chris Parrish (kitparrish)
2010-03-07 09:25:46 PST (-0800)

Leptogium or Collema? Those two genera are characterized by, respectively, the presence or absence of a cortex, and in the field they are meant to be distinguished by differences in color and texture, but I haven’t yet reached that level of enlightenment. I may need to expand my circle of confusion to include Tremella.

Created: 2010-03-07 08:54:23 PST (-0800)
Last modified: 2014-02-19 22:16:34 PST (-0800)
Viewed: 161 times, last viewed: 2019-02-02 03:00:58 PST (-0800)
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