Observation 159024: Byssomerulius corium (Pers.) Parmasto

When: 2014-02-02

Collection location: Cottonwood, Arizona, USA [Click for map]

Who: Terri Clements/Donna Fulton (pinonbistro)

No specimen available

On underside/shady side of dead limb of living native mesquite (Prosopis velutina) in mesquite bosque at 3200’ elevation. Tremella sp on same limb (see obs 159008). White hairy upper surface; smooth fertile surface (some shallow indentations— are these pores?). No precip for over a month. A corticioid fungus—possibly in the Corticiaceae family. Any ideas would be appreciated.

3/3/14: Found what I believe to be the same thing after 2 days of good rain—obs 160676. The shallow indentions had become, in Gilbertson’s words, “reticulately poroid” and the colors more vibrant. See his description of B. corium in http://www.fpl.fs.fed.us/documnts/pdf1976/gilbe76a.pdf, page 504,

Species Lists



Proposed Names

-29% (1)
Recognized by sight: Known host for Tremella mesenterica
Used references: Mycoparasitism of Some Tremella Species Walter Zugmaier, Robert Bauer and Franz Oberwinkler Mycologia Vol. 86, No. 1 (Jan. – Feb., 1994), pp. 49; and ://www.mykoweb.com/CAF/species/Tremella_aurantia.html
-57% (1)
Recognized by sight: resupinate when young; known host for Tremella aurantia

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
B. corium
By: Terri Clements/Donna Fulton (pinonbistro)
2014-02-04 02:02:42 AST (-0400)

is known to occur on dead limbs of mesquite in Arizona. See http://www.fpl.fs.fed.us/documnts/pdf1976/gilbe76a.pdf and this looks like other MO obs of this species. However, I could find no references of Tremella parasitizing it.

Created: 2014-02-03 00:31:42 AST (-0400)
Last modified: 2014-03-16 17:23:59 AST (-0400)
Viewed: 110 times, last viewed: 2018-05-19 17:58:48 AST (-0400)
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