Observation 64607: Botryobasidium aureum Parmasto

Proposed Names

-86% (1)
Used references: Tomentella sp. (18726)
84% (1)
Recognized by sight
86% (1)
Eye3 Eyes3
Recognized by sight: this is not fuzzy or fibrous, it is powdery; very common here in spring

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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I definitely agree with the genus
By: Jason Hollinger (jason)
2011-04-11 17:46:55 PDT (-0700)

I was just wondering about the species. Alan Silverside’s webpage answers several of my questions:

1) most of the anywhere from twelve to forty (!!) known species are tropical and subtropical
2) some only appear pigmented when dry
3) not all are as “lush and fluffy” as T. aurea (but are any others?)

It sure seems T. aurea is the best name for material like this up north. It may get trickier along the Gulf of Mexico and Florida. I’ll bet the amazing population at Point Lobos State Park in central California is T. aurea, as well, based on this information.

Thank you for sharing, Adolf!


If not Trentepohlia?
By: Oluna & Adolf Ceska (aceska@telus.net)
2011-04-11 17:13:28 PDT (-0700)

I cannot think about anything else. Under the microscope you would be able to see the filamentous structure, but the chloroplasts are hidden by orange pigment. See

Trentepohlia species
By: Jason Hollinger (jason)
2011-04-11 13:09:56 PDT (-0700)

O&A — I seem to remember reading somewhere or other years ago that one could not be certain of Trentepohlia species simply based on orange coloration. (Something about a number of species being capable of producing significant quantities of carotene.) But maybe that only applies in practice to tropics? I really hope I was misled or mistaken… It would be tremendously exciting (as far as these things go!) to be able to put a species determination on all these orange Trentepohlia that show up on MO from time to time.

Thanks Oluna & Adolf
By: Martin Livezey (MLivezey)
2011-03-30 15:57:24 PDT (-0700)

Thank you for the comment. It is nice to hear from you. In your presentation, I believe you said, ‘…and some fungi require a microscope for identification!’. Yes. I am beginning to feel that more and more. I will get some spores and see if I can find someone nearby.

What about Trentepohlia aurea?
By: Oluna & Adolf Ceska (aceska@telus.net)
2011-03-30 15:51:29 PDT (-0700)

It looks to us like Trentepohlia aurea (alga). Put it under the microscope! You should see the chloroplasts, if we are right. O&A

You’re right. I am going to have to get a tripod.
By: Martin Livezey (MLivezey)
2011-03-24 06:12:37 PDT (-0700)

I photographed the same thing last night, this time using my backpack. No dice. The closeups are still blurry. Thanks for your comment.

finds like these
By: Danny Newman (myxomop)
2011-03-23 18:46:12 PDT (-0700)

kind of demand the use of a tripod to see up-close what the individual structures look like.

Created: 2011-03-22 19:28:21 PDT (-0700)
Last modified: 2012-04-08 06:29:51 PDT (-0700)
Viewed: 258 times, last viewed: 2016-10-24 15:41:35 PDT (-0700)
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