Observation 157040: Ganoderma tuberculosum Murrill

When: 2013-12-16

Collection location: Alva, Florida, USA [Click for map]

Who: MyCallOhGee

No specimen available

Found in mostly all citrus groves in SWFL. Growing on dead citrus wood.



Proposed Names

44% (4)
Recognized by sight: varnished cap surface is more like G. tsugae or G. lucidum
Used references: Kuo, M. (2004, February). Ganoderma applanatum. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/ganoderma_applanatum.html and mykoweb.com
7% (3)
Recognized by sight: I know there is some controversy about this species name for NA specimens but it is the species mentioned in the publication cited by the observer so the group name is the most appropriate I think
Used references: University of Florida IFAS Publication #HS1019 reviewed June 2013: no G. tsugae on citrus in Florida
-3% (2)
Recognized by sight
52% (1)
Recognized by sight: Context should be woody, dark brown, and have small resinous deposits littered throughout. Perennial.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Compare to
By: Matthew Schink (MSchink)
2014-11-02 21:14:30 PST (-0800)

Ganoderma tuberculosum.

Original description
Ganoderma tuberculosum Murrill, sp. nov.
Pileus rigid, dimidiate to reniform, applanate, 7-15 × 12-30 × 2-4 cm.; surface glabrous, laccate, shining, many times shallowly sulcate, radiate-rugose, roughly tuberculose, especially in large specimens, usually umbonate behind, bay to dull-brown with age; margin cremeous to fulvous, glabrous, slightly undulate, subobtuse to truncate with age; context punky to soft-corky, isabelline above, fulvous below, castaneous with age, homogeneous, 5-10 mm. thick; tubes perennial, indistinctly stratified, 1-2.5 cm. long, avellaneous within, slightly darker with age, mouths circular, 4 to a mm., not stuffed when young, edges obtuse, cream-colored, at length thin and darker in color; spores ovoid, dark-brown, 8 × 6 µm; hyphae dark-brown, 6 µm.
Type collected in British Honduras, on dead wood, in 1906, Morton E. Peck.
Distribution; British Honduras.

The study you cite
By: Terri Clements/Donna Fulton (pinonbistro)
2014-01-03 18:25:10 PST (-0800)

mentions 3 species of Ganoderma that attack citrus; 2 of which occur in Florida: applanatum and lucidum. Of these 2 the first has a dull cap surface and the second a shiny “varnished” surface.


Created: 2014-01-03 17:11:26 PST (-0800)
Last modified: 2014-11-08 02:29:23 PST (-0800)
Viewed: 186 times, last viewed: 2018-09-10 14:00:48 PDT (-0700)
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