Observation 27658: Albatrellus ovinus (Fr.) Kotl. & Pouz.

These were relatively small with the largest having a cap dia. of 7.1cm, and growing under spruce. A case could be made for Albatrellus avellaneus but the spores on these were only about 4 X 3 microns vs 5-5.6 X 3.6-4.2 for the A. avellaneus.
While there is ample literature for Albatrellus ovinus in the PNW, Trudell and Ammirati in their new book state that A. ovinus “apparently does not occur in our region” (p255)?

Proposed Names

57% (1)
Eye3 Eyes3
Based on microscopic features: Spores were approx. 4.0 X 3.0 microns
-30% (3)
Used references: Smith, Smith & Weber (1981) keys A. ovinus and A. confluens in the same couplet. Spore size for A. confluens is 4-5.5 × 3-4 um. Smith says there is a Western version of A. ovinus, at least in 1975 in his “A Field Guide to Western Mushrooms”. (Maybe it has a new name by now.)

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Can’t find
By: Irene Andersson (irenea)
2009-11-02 13:11:12 CST (-0500)

evidence of compared european and american taxa anywhere..
Erroneous, since so much effort has been made by mycologists to sort them out and describe new species.

For example, the chinese described one new species, piceiphilus:

and separated it by sequencing 18 collections from 9 Albatrellus species, among them A. ovinus, for some reason only swedish collections; A. subrubescens, one swedish collection, (in my opinion a mistake, because it was originally described from Florida); A. similis, type collection(?), also described from Europe.

Another chinese study, which I think is more interesting to western americans, is this:
A. avellaneus is missing there (but perhaps it can count as an extreme form of ovinus?).

Mushrooms of the Pacific Northwest is
By: Ron Pastorino (Ronpast)
2009-11-02 10:50:08 CST (-0500)

basically a general field guide and does not go into great detail but they do mention Albatrellus avellaneus and Albatrellus subrubescens as being similar.
The former’s description matches closely with A. ovinus but the spores are larger.

By: Irene Andersson (irenea)
2009-11-02 05:48:41 CST (-0500)

Albatrellus ovinus doesn’t occur in the region, these certainly are some of the most ovinus look-alikes I have seen from the area.
In my experience the caps often become purplish gray if they are exposed to sun in an early stage of development, otherwise they stay almost white.

What Albatrellus species are listed from the PNW by Trudell and Ammirati then?

Albatrellus confusing….?
By: Ron Pastorino (Ronpast)
2009-11-01 23:34:01 CST (-0500)

There are some problems and inconsistencies with the A. confluens. The picture in Smith’s ‘A Field Guide of Western Mushrooms’ shows caps with apricot coloring which is what Tylutki mentions in his description(Mushrooms of Idaho and the PNW). Also in Smith’s book he mentions and shows compound fruit bodies.
Smith says inamyloid spores and Tylutki says “somewhat amyloid spores”. The spores in these were definitely not amyloid as I had difficulty seeing them under the microscope in Melzers.
There must be some new studies out to warrant the statement by Trudell and Ammirati about the possible absence of A. ovinus in the PNW.

Created: 2009-11-01 19:10:53 CST (-0500)
Last modified: 2009-11-01 19:10:53 CST (-0500)
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