Observation 228734: Hypoxylaceae DC.

Crust fungus growing on trunk of Chinese Privet (Ligustrum sinense; approximately 4-5 inches diameter) located on flood plain above the Oconee River. Observed after recent rain; clay soil still wet.
Some patches (dry) had burnished appearance; others (still moist) had powdery appearance.
Center (fruiting surface?) yellowish-brown surrounded by outer zones of purple & white; some blackening (of wood) beyond the margin of the fungus.

Compare with Observation http://mushroomobserver.org/250467

Species Lists


Dry patches with burnished appearance
‘Most’ patches with powdery appearance

Proposed Names

85% (1)
Based on chemical features: ITS
-57% (1)
Used references: Reported from Ligustrum amurense in Campbell, W.A., Miller, J.H., and Thompson, G.E. 1950. Notes on some wood-decaying fungi of Georgia. Pl. Dis. Reporter 34: 128-134. (2786) & Hanlin, R.T. 1966. Host index to the Basidiomycetes of Georgia. Georgia Agric. Exp. Sta. Mimeo Ser. n.s. 260: 1-30. (1264)
-57% (1)
Recognized by sight
-57% (1)
Used references: Gerhardt Kohller @ https://www.facebook.com/...
Based on microscopic features: lamprocystidia & pigmented spores
-57% (1)
Recognized by sight
-57% (1)
Recognized by sight
-57% (1)
Recognized by sight
31% (2)
Recognized by sight: ITS; looks similar to some images of H. rubiginosum

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= Observer’s choice
= Current consensus


Add Comment
No ‘yellow’ phase
By: Joan Knapp (PucaK)
2018-06-12 11:20:12 EDT (-0400)

These always appear first as a purple fungus. I’ve never seen a yellow phase. Ages to the shiny greenish surface

Mounting medium, magnification
By: Joan Knapp (PucaK)
2016-12-27 17:52:12 EST (-0500)

Mounting medium: KOH (3%)
Magnification: x1000 (Oil immersion)
Link: https://www.facebook.com/...

it almost
By: Danny Newman (myxomop)
2016-12-27 16:05:26 EST (-0500)

looks like there is asexual propagation going on at the ends of those encrusted cystidia (lamprocystdia?).

i would show this to Karen Nakasone

what was your mounting medium? what magnification?

By: Joan Knapp (PucaK)
2016-12-27 15:22:45 EST (-0500)

Danny, I found another specimen, fruiting, at home. Haven’t posted it here yet but posted pics of microscopy at https://www.facebook.com/...
See if any of the micro images are helpful. If so, I’ll include them when I post the photos of the specimen.

to start
By: Joan Knapp (PucaK)
2016-09-02 18:03:27 EDT (-0400)

I think I can handle that without too much trouble. :-)
Now to figure out when to collect.

to start
By: Danny Newman (myxomop)
2016-09-02 17:54:29 EDT (-0400)

i’d just get the tiniest piece you can of what seems like fungal tissue, squash mount it in KOH, and see what shows up.

What, specifically, am I looking for?
By: Joan Knapp (PucaK)
2016-09-02 16:31:16 EDT (-0400)

Assuming that I find this fruiting (I assume), do I just try to gat a macro cross-section?
I’ll have to try and cut a section containing the fungus and try sectioning. Have no experience doing this. Do have a dissecting scope also.

Host plant
By: Joan Knapp (PucaK)
2016-09-02 16:30:40 EDT (-0400)

Took the liberty of submitting your host pics to the FB Plant Identification. Some fungal friends responded. Agree it’s Chinese Privet. (And also ID’d the fungus to genus Peniophora :-)).

didn’t see flowers
By: Danny Newman (myxomop)
2016-08-31 22:03:45 EDT (-0400)

so not really sure.

either way, one of them should be scoped. yours looks a lot more developed (or at least feature rich) than mine does.

Here’s mine…
By: Joan Knapp (PucaK)
2016-08-31 20:01:31 EDT (-0400)

Could be. The leaves are opposite, but a bit blunter than pics of looked at. Here’s a link for it… http://www.southeasternflora.com/View_Flora.asp?PlantID=56#
See if it rings a bell.

here’s mine.
By: Danny Newman (myxomop)
2016-08-31 19:39:43 EDT (-0400)

Observation 250467

just a crummy smartphone shot, but distinctly similar. maybe you recognize the tree by the leaves in the second image?

no idea
By: Danny Newman (myxomop)
2016-08-31 13:56:05 EDT (-0400)

i’m not so good with tree IDs, especially in places as botanically foreign as the Tennessee.

I think
By: Joan Knapp (PucaK)
2016-08-31 13:45:36 EDT (-0400)

Thanks for your thoughts on a possible ID. I’ve been biding my time. The fungus season is just really starting here. Planned to go back and see if I can see it in the ‘active’ state. I found some more on a tree nearer the trail. May not have to bushwack through the ‘swampy’ area around the original tree where I found them.
Was ‘yours’ on Chinese Privet (Ligustrum sinense)?

I think
By: Danny Newman (myxomop)
2016-08-31 13:30:27 EDT (-0400)

i just found the same thing in Tennessee. Will check to see if I still have the collection.

Specimen Revisit
By: Joan Knapp (PucaK)
2016-01-24 19:34:01 EST (-0500)

This was the first sighting of this fungus. Yes, I hope to revisit it on a regular basis. Hopefully, I see it fruit. I can ‘try’ for a cross-section – it’s very thin – might be a challenge but I’ll try.

very interesting
By: Danny Newman (myxomop)
2016-01-24 19:00:43 EST (-0500)

i would like to see a cross section and some additional stages of development. could this be revisited?

Created: 2016-01-23 17:01:05 EST (-0500)
Last modified: 2018-06-12 11:20:13 EDT (-0400)
Viewed: 215 times, last viewed: 2019-07-04 09:21:11 EDT (-0400)
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