Public Description of Hohenbuehelia petaloides (Bull.) Schulzer

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Name: Hohenbuehelia petaloides (Bull.) Schulzer
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Description status: Unreviewed

Taxonomic Classification:

Domain: Eukarya
Kingdom: Fungi
Phylum: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Pleurotaceae

General Description:

Hohenbuehelia petaloides was rightfully named after an Austrian mycologist/botinist/statesmen, Ludwig Samuel Joseph David Alexander von Hohenbühel Heufler (1817-1885). Due to the fan-like appearance of this species, it is more droningly known as the Leaf-like Oyster.
H. petaloides is a wood decay fungi and obtains nitrogen by catching nematodes with its sticky hyphae. The nematode violently lashes about as a fly would if trapped in spider web. The quick movements only brings the doomed nematode closer to its death.

Diagnostic Description:

Gills: decurrent, narrow, crowded, grayish and or whitish, slightly fringed
Stalk: stout, hairy, whitish
Spore Print: white
Spores: range 7-9 X 4-5 micro;m elliptic, smooth, inamyloid
Cap: 2.5-7.5 cm wide, fan-shaped,slightly hairy to smooth, grayish brown or tan to brown, sometimes white.


Commonly found June-September <—non-region specific


This fungi is found on wood or wood chips and grows solitary.

Look Alikes:

H. petaloides was first placed in the Pleurotus genus due to its morphology. Microscopically, this fungus has a distinct gelatinous layer. It looks similar to Pleurotus ostreatus (pictured below).


Bessette, A.E., Bessette, A.R., and Fischer, D.W. Mushrooms of Northeastern North America.(1997). Syracuse, NY. Syracuse University Press, 2002.

Volk, T.(2000). Hohenbuehelia petaloides, a wood decay fungus that eats nematodes, Tom Volk’s Fungus of the Month for August 2000. Retrieved Dec. 2008 from TomVolkFungi.


“Common Name: Shoehorn Oyster Mushroom”

Description author: Garryn Skurulsky (Request Authorship Credit)
Description editors: Nathan Wilson, IntoTheFlames

Created: 2008-12-12 19:40:09 PST (-0800) by Garryn Skurulsky (Garryn)
Last modified: 2011-10-25 17:10:03 PDT (-0700) by IntoTheFlames
Viewed: 939 times, last viewed: 2019-01-17 01:43:08 PST (-0800)