Observation 185698: Ganoderma polychromum (Copel.) Murrill
When: 2014-10-25
No herbarium specimen

Notes: This grew from the spot I picked my specimen for observation: http://mushroomobserver.org/174917?q=2IMZr
This was growing just above the base of a dead oak tree.

Images

474570
Image taken on 10/25/2014.
474510
Image taken on 8/31-2014.
474511
Image taken on 9/6/2014.
474517
Image taken on 9/6/2014.
474518
Image taken on 9/6/2014.
474524
Image taken on 9/10/2014.
474527
Image taken on 9/10/2014.
474530
Image taken on 9/13/2014.
474533
Image taken on 9/13/2014.
474534
Image taken on 9/13/2014.
474535
Image taken on 9/13/2014.
474540
Image taken on 10/4/2014.
474541
Image taken on 10/4/2014.
474542
Image taken on 10/4/2014.
474543
Image taken on 10/4/2014.
474544
Image taken on 10/11/2014.
474545
Image taken on 10/11/2014.
474547
Image taken on 10/24/2014.
474548
Image taken on 10/24/2014.
474555
Image taken on 10/24/2014.
474556
Image taken on 10/25/2014.
474557
Image taken on 10/25/2014.
474561
Image taken on 10/25/2014. I left the bottom smaller specimen to grow.
474566
Image taken on 10/25/2014. Resin exuded after needle pricks to the margin.
518729
Image taken on 5/1/2015. This regrew from the same spot.
518730
Image taken on 5/1/2015. This regrew from the same spot.
518731
Image taken on 5/1/2015. This regrew from the same spot.
518732
Image taken on 5/1/2015. This regrew from the same spot.

Proposed Names

Tao
-27% (3)
Used references: The specimen exudes liquid when pricked on the margin.
21% (3)
Recognized by sight

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

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
Not arguing, just hoping to provide more information.
By: MSchink
2015-05-03 15:58:09 CEST (+0200)

Ganoderma polychromum seems reasonable. This specimen was collected about 31 miles from the type location for G.polychromum. And this has features which help to distinguish it from Eastern US varieties of Ganoderma. Several specimens that I have from the California area and one from Oregon all share these traits. The most prominent distinction is with the sharp zonations in the context.Another feature that I have noticed, though was not mentioned in any descriptions is a thin band of yellow flesh directly below the skin of the mushroom, best observed in a dry specimen. Eastern members of the resianceum clade invariably lack this. Murrill described the species in 1908 from specimens collected on oak I believe, in Searsville CA.

Steyaert later considered it synonymous with G.resinaceum based on microscopy and made note that in some European specimens of G.resinaceum similar zonations could occasionally be seen. Sequences from Genbank indicate that European G. resinaceum might be a tightly knit species complex which would explain the variability. It is unlikely that this is the same as any species in Europe though I have not gotten the DNA back to confirm.

“Sporophore solitary or superimposed; pileus renniform, soft, 4X6X1—2 cm.; surface glabrous, thinly encrusted, azonate, uneven, laccate, sublustrous, fulvous to bay; margin obtuse, cremeous, sterile, uneven: context fulvous, darker below, homogeneous, punky, slightly zonate, 1 cm. thick; tubes annual, 5-10 mm. long, avellaneous within, mouths large, angular, irregular, 2-4 to a mm., edges thin, uneven, greenish-white to grayishfuscous: spores obovate, subfuscous, 7-10 microns.”

Everything matches and I see nothing that would make the name G.polychromum invalid. Aside from Steyaert’s remarks it seems no one has really looked at it because most just considered the various names a synonym of G.lucidum.

this is laughable…
By: Richard and Danielle Kneal (bloodworm)
2015-05-02 08:22:24 CEST (+0200)
Excellent.
By: MSchink
2014-10-27 08:45:15 CET (+0100)

I sent an email.

Hello there MSchink
By: Thomas Laxton (Tao)
2014-10-26 23:32:22 CET (+0100)

I could send a piece of the specimen I collected. No problem.

Hello
By: MSchink
2014-10-26 23:09:37 CET (+0100)

I am interested in this west coast variety, would you be willing to send me a sample for study?

A very excellent set of photographs by the way.

Created: 2014-10-26 22:37:27 CET (+0100)
Last modified: 2015-05-02 16:19:25 CEST (+0200)
Viewed: 195 times, last viewed: 2016-05-10 16:38:10 CEST (+0200)
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