Observation 175272: Ganoderma curtisii (Berk.) Murrill

When: 2014-08-24

Collection location: Hickory Run State Park, Pennsylvania, USA [Click for map]

Who: Dave W (Dave W)

No specimen available

On dead maple.

Spotty darkening/blackening on pore surface hours after harvest.

I don’t see many hardwood-associating varnish-shelfs (shelves?) around here. My initial impression was “lucidum.” However, I see similar posts with “curtsii” proposed. What are the distinguishing features?

WVMC foray.


Photo taken 11-9-14. Same location as 8-24-14.
Photo taken 11-9-14. Same location as 8-24-14.
Photo taken 11-9-14. Same location as 8-24-14.
Photo taken 11-9-14. Same location as 8-24-14.
Photo taken 11-9-14.
Photo taken 11-9-14.
Several fruit bodies left to grow in 2014. Same fruiting as was first observed, only over 9 months later, 6-6-15.
Several fruit bodies left to grow in 2014. Same fruiting as was first observed, only over 9 months later, 6-6-15.

Proposed Names

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Add Comment
Very nice!
By: Matthew Schink (MSchink)
2014-11-10 20:35:31 MST (-0700)

Very nice new photos! Looks like the new ones have mature pores.

I’ll probably visit this collections site…
By: Dave W (Dave W)
2014-09-21 19:20:09 MST (-0700)

at least one more time this year. It’s been very dry there lately, but this should not be a big factor with this type. I had left the “antlers” in situ. So maybe more material will be available.

By: Matthew Schink (MSchink)
2014-09-21 12:14:31 MST (-0700)

Please let me know if you find more specimens like this from that location. It might have been too dry to get a viable sample. And there was a lack of mature pore surface to study spores from. This is a very interesting specimen.

Many thanks, M.Schink

This is an odd mushroom.
By: Matthew Schink (MSchink)
2014-09-05 01:18:15 MST (-0700)

I received this today, did a thorough look over and sliced it open. Its flesh is a different consistency than what I have seen with curtisii. Though I have limited experience only handling a few specimens. The flesh is softer than the other curtisii, and is lighter in color. I intend to try to culture this and if I am successful intend to get it sequenced.

I read through these comments. In regards to G.lucidum no longer being a valid name in North America, Ganoderma resinaceum, and Ganoderma curtisii are two mushrooms that have been widely misidentified as G.lucidum. Ganoderma resinaceum sensu North America can be distinguished from other similar red colored Ganodermas by the color and texture of its flesh, being darker brown, and wood like similar to applanatum but softer. And the fact that it will bleed a yellow/orange resin when the white growth edge is pricked. I am unaware of any other Ganoderma that will do this.

By: Erlon (Herbert Baker)
2014-08-28 13:30:29 MST (-0700)

I’m trying to find more info on Polyporus curtisii. You may be right, M.A. Curtis could have sent a collection to Berk., hence it being named after him. That makes more sense.

edit* Yes. Berk. and M.A. Curtis worked closely together naming species from north America. http://www.mycobank.org/...

By: Matthew Schink (MSchink)
2014-08-28 13:21:06 MST (-0700)

Very interesting, so does that make it a valid name for North America or does more research need to be done?

By: Erlon (Herbert Baker)
2014-08-28 13:12:13 MST (-0700)

It appears, the holotype for the European basionym Polyporus curtisii was lost, so they selected a neotype from South Carolina for G. curtisii.

By: Matthew Schink (MSchink)
2014-08-28 12:43:16 MST (-0700)
like a good reason to do some sequencing. I guess I will have to be on the look out for European G.curtisii now. When I was reading about it I guess I was under the impression that it was an American specimen in a European herbarium.
G. curtisii
By: Erlon (Herbert Baker)
2014-08-28 12:37:57 MST (-0700)

Ganoderma curtisii was originally described Europe, from the Kew botanical herbarium. Although Murrill accepted its presence in north America and transferred it from Polyporus, there has been no molecular work in comparison to the original european entity that I know of. It could be another misapplied name.

MSchink, email …
By: Dave W (Dave W)
2014-08-28 11:23:36 MST (-0700)

an address to me and I’ll send one of the Ganodermas. Should I wait until the fruit body is completely dehydrated? If so, you recommend using a dehydrator?

Thanks for the explanation.

By: Matthew Schink (MSchink)
2014-08-28 01:44:09 MST (-0700)

are a fun Genus. Ganoderma lucidum is the type species originally described from England. It appears to not occur outside of the European continent. Traditional Reishi from Asia is usually one of two species depending on its origin. Ganoderma sichuanense from mainland China, and Ganoderma multipileum from Taiwan and other tropical parts.

North American Ganodermas commonly mistaken for Ganoderma lucidum are usually one of 4 main laccate species, Ganoderma tsugae, Ganoderma resinaceum, Ganoderma curtisii and Ganoderma oregonense. There is also Ganoderma zonatum on palm in the Gulf coast. There may be some other species floating around that haven’t been properly described yet.

I think this specimen is indeed Ganoderma curtisii. Very prominent yellow coloring with a purple hue on the stipe.You may read that curtisii is primarily a Southeast mushroom but it has been seen as far North as Connecticut and Massachusetts and as far West as Oklahoma.There is a lookalike species in Utah that I am interested in.

Edit* this is pretty close to me, gives me hope I may come across some locally, If you still have this and would be so willing I would love to get a sample to study closer.

I have read in a few places…
By: Dave W (Dave W)
2014-08-26 18:04:22 MST (-0700)

including Tom Volk’s website, that the hardwood and conifer types were turning up DNA that was at least similar. But this may be old news. The color of this one well matches descriptions of curtisii.

During years when the Pleasing Beetles don’t devour all the G. tsugae in a week, I see hundreds of these on our dead hemlocks. Really a shame how our hemlocks are being wiped out. The local state parks still have a few healthy-looking old-growth hemlocks. But there seem to be newly dead ones every year. It is not unusual for G. tsugae to have a yellow band, especially when young. Here’s an example, obs 134663 .

I have these two Reishi specimens at home, in a sunny area where they will eventually dry. If anyone is interested in studying this collection, I would send one along.

Hi Dave
By: Erlon (Herbert Baker)
2014-08-26 11:22:00 MST (-0700)

The different clades, appear to be host specific with either hardwood or softwood. Murrill presented us with a bunch of names for north-American material. It will be cool to start using some of these. There are a lot of cryptic species. For example, there is more than a half dozen species in the Resinaceum group, alone, worldwide.

I think the Chinese material is different from the European material as well.

Ganoderma tsugae
By: Daniel B. Wheeler (Tuberale)
2014-08-26 10:40:39 MST (-0700)

as the name implies, is found on hemlock (Tsugae). The cap is more shellac-red than any hint of yellow.

G. lucidum was originally reported from Flowering Plum in China. Recently Chinese material has been shown to be different from that found in USA.

Thanks, Herb.
By: Dave W (Dave W)
2014-08-26 06:04:46 MST (-0700)

MycoBank does not list G. lucidum as a synonym for G. curisii. If the name lucidum is no longer used for NA material, then I would expect that at least some of the NA Reishi formerly known as lucidum would now be placed into curtisii. Are some of the former NA lucidum now considered as a variety of tsugae?

By: Erlon (Herbert Baker)
2014-08-25 08:04:59 MST (-0700)

G. lucidum does not occur in North-America. G. curtisi tends to have a more prominent yellow and pinkish opaque color. It usually grows centrally stipitate to laterally stipitate at ground level.

Created: 2014-08-25 06:16:52 MST (-0700)
Last modified: 2016-10-10 15:50:53 MST (-0700)
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