Observation 92744: Ganoderma applanatum (Pers.) Pat.

When: 2012-04-14

Collection location: Snow Peak, Lacomb, Oregon, USA [Click for map]

Who: Britney Ramsey (Riverdweller)

No specimen available

Found at 1200 ft elevation on downed Douglas fir.

KOH 5% – no change in context, porous surface, or pileus.

Smell fragrant and pleasant. Taste slowly bitter or acrid after 20 seconds. (sample taken from fresh context and at attachment.) Sampled by three tongues, two could taste bitter, while I could not. For me, I tasted nothing but had a strange after-effect of numbness or of ‘battery-licking’ that lasted half hour.

Context thick, spongy, tough to cut through but still spongy. Cream colored with slivers of brown from the pore tubes.

Pore surface bruising chocolate brown. When I grabbed it to pull it off the tree, the pore surface was very watery and turned purple, like a translucent purple …almost lilac ….then to a faintly brown color. Not the same brown as when scratched with sharp object. My hand was very wet from squeezing the pore surface. It left a brownish watery substance on my hand…..brown spores??

Point of attachment was very spongy and flashed wine/purple after stretched from detachment. Purple slowly changing to deep blue and remaining deep blue.

Tubes rusty brown to chocolate brown.

more notes to come.

Proposed Names

28% (1)
Recognized by sight
45% (2)
Recognized by sight: golden brown spores.
30% (2)
Recognized by sight: Growth habit and lack of context between the layers of tubes.

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
The way to identify these
By: ndoll
2012-04-24 22:35:25 CDT (-0400)
  • Measure the spores, and, get clear microscopy photos using a oil-immersion lens. If possible only measure mature spores stuck on the cap cuticle. Identification features of some Ganoderma are: double-walled, truncated, and ornamented.
  • Scrape below the surface of the cap cuticle, and look for a thick, black, and lacquered crust. If absent, prepare another microscope slide using scrapings of cap cuticle and get microscope photos of the hyphal systems. Look for a variety of hyphae shapes and sizes, and take multiple photos. Post them to see.
  • Measure the density of pores per 1 millimeter. Find the largest and smallest pores. Use a ruler with millimeters, and take close-up photos. The easy way to measure the density of pores is from photos on a computer screen.
  • Add photos of the sporocarp with a ruler for scale. Preferably use centimeters to show its dimensions. The ruler is very important to determine its width, height, diameter, and radius. It also helps to measure the length of the tubes, and thickness of context.

With those points of info, we should be able to determine the genus, probably the subgenus, and possibly the specie. The microscopy portion is the starting point. The microscopy is time consuming and often it must be worked through more then once for accuracy.

Can’t be G. annularis
By: Daniel B. Wheeler (Tuberale)
2012-04-14 21:14:55 CDT (-0400)

According to Michael Kuo, “Ganoderma annularis, found on hardwoods in California, has tubes that do not develop in new layers each year, and extremely thin flesh; its spores measure 10-12 × 6-8 µ. Ganoderma brownii, also found on California hardwoods, has layered tubes and spores 9-12 × 7-9 µ.”

This was not found on hardwood. The flesh was not thin, but exceedingly thick. Does not look like any Ganoderma I’ve ever seen before, but I’m not an expert in the genus either.

Hope you saved this. May be a species novum (species new to science).

By: Darvin DeShazer (darv)
2012-04-14 14:15:08 CDT (-0400)

Yes, they’re Ganoderma spores.

Sure looks like Ganoderma spores
By: Irene Andersson (irenea)
2012-04-14 13:08:30 CDT (-0400)

brown and thickwalled with a large germ pore

Spores are very different
By: Darvin DeShazer (darv)
2012-04-14 11:42:00 CDT (-0400)

Look for spores. Fomitopsis has white spores that look clear and shaped like Bolete spores. Ganoderma has unique spores that are golden brown in color, double walled and shaped like these links.

By: Britney Ramsey (Riverdweller)
2012-04-14 10:33:11 CDT (-0400)

I guess I’ll try this polypore under the scope. If anyone has any pointers, I’d gladly take them.

Created: 2012-04-14 10:26:24 CDT (-0400)
Last modified: 2012-04-18 22:44:09 CDT (-0400)
Viewed: 585 times, last viewed: 2018-02-19 13:36:12 CST (-0500)
Show Log