Observation 32342: Tomentella Pers. ex Pat.

This collection was from the Alder thicket at the base of the Mt. Vision Rd.

[admin – Sat Aug 14 02:03:19 +0000 2010]: Changed location name from ‘Mt. Vision, Pt. Reyes National Seashore, Marin Co, CA’ to ‘Mount Vision, Point Reyes National Seashore, Marin Co., California, USA

Species Lists


resupinate basidiocarp on litter
small piece of hymenium, with spores, and with short subhymenial cells

Proposed Names

0% (2)
Recognized by sight: This is our most common species of Tomentella, which we initially recognized by sequence, the color is fairly distinctive.
Used references: Koljalg Tomentella (Basidiomycota) and related genera in Temperate Eurasia
Based on microscopic features: spore shape,pattern of spines, and short cells in the subhymenium are diagnostic
-55% (1)
Used references: Tom’s ID – correcting for spelling
28% (1)
Used references: Tom’s correspondence with Kabir and his Estonian contact. Alder form.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Christian (Christian Schwarz)
2011-07-05 12:52:08 PDT (-0700)

Thanks for the update, Tom.

The Alder associated version is being described as new
By: Tom Bruns (pogon)
2011-07-05 12:41:40 PDT (-0700)

Robert Sasata is right that T. sublilacina is widespread. ITS sequence data now show it is common across Europe and North America. Interestingly the form associated with Alder has a slightly different ITS sequence and this difference is consistent across the continents. As a result it’s being described as a new species by Urmas Koljalg in Estonia.

ITS from this particular specimen has now been sequenced by Kabir Peay, and this shows that it is the Alder form, so when the new species is described by Urmas, this specimen will need a new name.

Here is the ITS sequence from the specimen in case you folks want to play around with GenBank and sequence analysis:


also present in the west
By: Robert Sasata (Sasata)
2011-07-03 21:55:47 PDT (-0700)

More recent research shows it to be one of the dominant ectomycorrhizal species (based on mycorrhizal abundance, not fruit bodies) in bishop pine forests in Point Reyes National Seashore, California. Sources:

Gardes M, Bruns TD. (1996). “Community structure of ectomycorrhizal fungi in a Pinus muricata forest: Above- and below-ground views”. Canadian Journal of Botany 74 (10): 1572–1583

Bruns T, Tan J, Bidartondo M, Szaro T, Redecker D. (2002). “Survival of Suillus pungens and Amanita francheti ectomycorrhizal genets was rare or absent after a stand-replacing wildfire”. New Phytologist 155 (3): 517–523.

New to the west?
By: Darvin DeShazer (darv)
2010-01-21 23:17:34 PST (-0800)

Larsen claims this species is known only from the Eastern US.

Larsen, M. J. 1968. Tomentelloid Fungi of North America. Pub. #93. State Univ. College of Forestry at Syracuse Univ., Syracuse, NY. 157p

Created: 2010-01-21 09:41:16 PST (-0800)
Last modified: 2011-07-05 12:53:08 PDT (-0700)
Viewed: 116 times, last viewed: 2017-06-06 07:40:32 PDT (-0700)
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