Join our West Coast Rare 10 Challenge and help us document rare and threatened fungi

Like so many other organisms, fungi, along with their often fragile and threatened habitats, need our protection. 


But unlike plants or animals, fungi rarely get considered in conservation plans. They lack legal protection. Of the 120,000 species that have been assessed for the IUCN Red List of threatened species only 371 are mushrooms - the rest are plants and animals. And not a single mushroom  species is  protected under the Endangered Species Act in the United States.


Why is that? Unlike plants or animals many species of fungi often only fruit for a few days a year and their fruiting bodies disappear quickly. They’re often inconspicuous and not enough people look for them and record them. And without a public record of their existence, they remain neglected, under-researched, misunderstood and unprotected.


Let’s begin to change this! Help us find and document 10 species of rare, under-documented and potentially threatened fungi on the West Coast. Scientists and conservationists need more data on these fungi in order to better understand and protect them - and all the other fungi they share their habitats with. Your high quality observations can make a difference.


This initiative covers the West Coast - from California all the way up to Alaska - and runs from October 15, 2020 to March 31, 2021.


Photo: Noah Siegel


How do I participate?

1. Decide which of the fungi on the list below might be growing in a habitat that you are planning to visit between October 15, 2020 and March 31, 2021.


2. A list of the 10 fungi with links to printable pdfs can be found below or here. Print out the pdf pamphlet for the species you’re interested in and bring it along, or have the information handy on your phone.


3. If you think you’ve found one of the Rare 10, follow the instructions on the pamphlet for each species. Or email us at This email address is being protected from spambots. You need JavaScript enabled to view it. to let us know and we’ll let you know what to do next.


4. Don’t forget to tag us on Instagram with a picture of your find at #rare10challenge. A story of how you found it would be even better! Follow us on Facebook and Instagram to see what others are finding.


5. We are also very interested in the other fungi that you might come across in these habitats. Consider joining our iNaturalist Project and sharing your observation there. Instructions are here, if you’re unsure how to do this.


Make sure to get a collecting permit if you’re visiting an area where collecting is restricted. More information can be found at the bottom of this page.


The Rare 10 list has been compiled by mycologists Bitty Roy, Else Vellinga and Roo Vandegrift. Find out more about the FunDiS fungal conservation working group here.


Email us at This email address is being protected from spambots. You need JavaScript enabled to view it. with any questions. We can’t wait to see what you’ll find! And please share this information with anyone else who might be interested.



The Ghost Funnel

(Stereopsis humphreyi)

Region: Pacific Northwest: OR, WA, BC, AK

Habitat: Coastal Sitka spruce forests

Season: Late September - December

PDF Pamphlet


Photo: Adolf Ceska



The Western Bondarzewia

(Bondarzewia occidentalis)

Region: Pacific Northwest

Habitat: Mature/old growth forests

Season: Fall in to winter

PDF Pamphlet


Photo: John Schaefer



The Piggyback Pinkgill

(Volvariella surrecta)

Region: Forested mountain habitats from southern California to British Columbia

Habitat: Parasite on Clitocybe

Season: Fall

PDF Pamphlet


Photo: Noah Siegel



The Stalked Oddball

(Dictyocephalos attenuatus)

Region: CA, NV, AZ, Four Corners area

Habitat: Desert areas

Season: After spring rains/summer monsoons/all year

PDF Pamphlet


Photo: Debbie Drechsler



Manzanita Butter Clump

(Pachycudonia spathulata)

Region: CA coast range and Sierra foothills, maybe WA or OR

Habitat: Under Manzanita and Pacific Madrone

Season: Winter - early spring

PDF Pamphlet


Photo: Matt Wilton



The Golden-gilled Waxy Cap

(Hygrocybe flavifolia)

Region: Northern CA, maybe OR

Habitat: Coastal redwood forests

Season: October - February 

PDF Pamphlet


Photo: Alison Pollack



Little Blue Polypore

(Neoalbatrellus subcaeruleoporus)

Region: Northern CA, OR, WA and BC

Habitat: Under Western hemlock, Douglas fir, and other conifers

Season: September - January 

PDF Pamphlet


Photo: Christian Schwarz



The Meadow Amanita

(Amanita pruittii)

Region: Northern CA and OR

Habitat: Wet grasslands, disturbed land, trail edges and after fire and bulldozing

Season: October - December

PDF Pamphlet


Photo: Damon Tighe



The Purple Prince

(Ramaria purpurissima)

Region: Northern CA, SW Oregon and NW Idaho; maybe WA

Habitat: Old-growth forests; under Red and White fir, Western hemlock and Douglas fir

Season: Fall - early winter 

PDF Pamphlet


Photo: Noah Siegel



The Yellow-gilled Cypress Lepiota

(Lepiota luteophylla)

Region: Northern CA

Habitat: Under Monterey cypress

November - February

PDF Pamphlet

Photo: Christian Schwarz


Sigrid Jakob
Author: Sigrid Jakob
Sigrid Jakob is FunDiS' conservation coordinator.

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About Fungal Diversity Survey

FunDiS is dedicated to a world in which the fungal kingdom is fully documented, understood, appreciated and protected.

Fungal Diversity Survey
10385 Green Meadow Rd
Sebastopol, CA 95472