E-Flora BC: Electronic Atlas of the Flora of British Columbia

Pleurocybella porrigens

Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.

Introduction to the Macrofungi

© Jim Riley  Email the photographer   (Photo ID #52733)

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Distribution of Pleurocybella porrigens
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Species Information

Pleurocybella porrigens is distinguished by smooth, pliant, white caps with a shelf-like habit on conifer wood, and narrow, crowded, white or yellowish gills. The description is derived from Arora(1) except where noted. It is common in the Pacific Northwest.

There are collections at the University of British Colombia from BC and at the University of Washington from WA, OR, and AK. It has been reported from ID by Andrew Parker, pers. comm., from CA by Arora, and is also found elsewhere in North America. Breitenbach(3) give the distribution as North America, Europe, and Asia.
4-8(10)cm wide, projecting 2-5cm, fan-shaped to tongue-shaped or petal-shaped, margin at first incurved, often lobed or wavy when older; pure white to milky white, but sometimes creamy when old; smooth, not viscid
very thin, pliant; white
decurrent if stem present, crowded, thin, narrow; white or yellowish
"absent or present only as a narrowed, stubby white base"
mild (Arora), pleasant (Phillips)
mild (Arora), pleasant (Phillips)
Microscopic spores:
spores 6-7 x 5-6 microns, nearly round, smooth, inamyloid, (Arora), spores 5.1-7.3 x 4.5-6.7 microns, nearly round, smooth, iodine negative, colorless, with droplets; basidia 4-spored, 30-36 x 5.5-7.5 microns, cylindric-clavate, with basal clamp; pleurocystidia and cheilocystidia not seen; clamps mentioned for cap cuticle and basidia, (Breitenbach)
Spore deposit:
white (Arora), whitish (Breitenbach)

Habitat / Range

in shelving groups or overlapping clusters on old rotting conifers, especially hemlock; fruiting especially in fall

Synonyms and Alternate Names

Phyllotus porrigens (Pers.) P. Karst.
Pleurotellus porrigens (Pers.) P. Kumm.
Pleurotus porrigens (Pers.) Kuehner & Romagn.

Taxonomic and Nomenclatural Links

Genetic information (NCBI Taxonomy Database)
Taxonomic Information from the World Flora Online
Index Fungorium
Taxonomic reference: Mycologia 34: 81. 1947; Pleurotus porrigens (Pers.) Kuehner & Romagn.; Pleurotellus porrigens (Pers.) P. Kumm.; Phyllotus porrigens (Pers.) P. Karst.

Additional Range and Status Information Links


In the past Pleurocybella porrigens was generally considered edible, but in 2004 there were 17 deaths in Japan: most or all deaths occurred in people who had kidney disorders and the average age was 70: they died of an acute brain condition; another person on kidney dialysis died in 2009 from this species, (Beug(1) and M. Beug pers. comm.).

Additional Photo Sources

Related Databases

Species References

Arora(1)* (as Pleurotus), Phillips(1)*, Lincoff(2)*, Miller(14)*, Ammirati(1)*, Courtecuisse(1)*, Bessette(2)*, Breitenbach(3)* (as Phyllotus), Beug(1), Schalkwijk-Barendsen(1), Trudell(4)*, Sept(1)* (as Pleurotus), AroraPocket*, Buczacki(1)*, Marrone(1)*, McBride(1)*, McAdoo(1)*

References for the fungi

General References