Observation 91070: Rhizopogon ochraceorubens A.H. Sm.
When: 2012-03-24
No herbarium specimen

Notes: I have these specimens, if someone wants to take a closer look.

Proposed Names

-10% (3)
Recognized by sight
28% (1)
Recognized by sight: just opening the field for the upcoming micro…
28% (1)
Recognized by sight: Leucophleps citrina would match description to date. There is a rhizomorphs on the lower specimen, which could also indicate Leucophleps. Rhizopogon should have been chambered on the interior.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Pulled what were supposed to be dried sporocarps today.
By: Daniel B. Wheeler (Tuberale)
2012-04-23 18:28:11 EDT (-0400)

Not bone dry, and in plastic zip-loc bag. You can guess the outcome. Collection totally involved with white mycelium. Tossing collection. Sorry, George. For the future, collections need to be bone-dry and in waxed paper bags.

No visible spores
By: Daniel B. Wheeler (Tuberale)
2012-03-30 18:19:31 EDT (-0400)

under 100x and 30×. Specimens may be immature.

Received specimen today.
By: Daniel B. Wheeler (Tuberale)
2012-03-30 18:18:14 EDT (-0400)

Should I post photos of interior? Interior is loculate, locules very large (in my experience), and similar to Leucophleps but with no indication of milky latex or interior gel. If Rhizopogon (still could be) not a species I’ve personally collected before.

sounds like a pogie, then…
By: Debbie Viess (amanitarita)
2012-03-30 12:30:18 EDT (-0400)
more notes
By: George Riner (mycogeo)
2012-03-30 12:08:14 EDT (-0400)

I’m sorry I didn’t photograph it, but I did slice it open and there was no interior structures – an evenly white interior. no bruising. no columella. no cavities. Hopefully Daniel will post with info once they have a chance to examine the collection.

By: Debbie Viess (amanitarita)
2012-03-29 20:58:59 EDT (-0400)

I forgot which one did. makes sense, since it kinda sorta looks like it, too.

but still, a slice down the middle would tell you lots.

By: Noah Siegel (Noah)
2012-03-29 16:49:05 EDT (-0400)
passes the Pogie bounce test as well…
did you do the pogie test?
By: Debbie Viess (amanitarita)
2012-03-29 11:48:54 EDT (-0400)

did it bounce?

if no photo available…
By: Debbie Viess (amanitarita)
2012-03-29 11:47:55 EDT (-0400)

what did the interior look like? solid? or with a columella?

BTW George, I’d be curious to hear what else was found at SP last weekend.

Please post it to BAMS, if not the SOMA list. Inquiring minds, etc.

I recall we had quite a bit of diversity last month at SP.

Unless T. citrina grows in March in CA
By: Daniel B. Wheeler (Tuberale)
2012-03-28 21:04:31 EDT (-0400)

can’t be T. citrina. Typically Oregon T. citrina is from October through early December. Freezes kill it in my experience.

That’s another reason why showing a sliced interior shot is important though.

By: Darvin DeShazer (darv)
2012-03-28 20:25:10 EDT (-0400)

These don’t have the pogie look. I suspect they are Truncocolumella citrina. Did you cut them in half and capture a photo or two?

They’re on their way to you
By: George Riner (mycogeo)
2012-03-28 14:10:33 EDT (-0400)

Dan: They’re in the mail today. I don’t know about the habitat. I’ve inquired if the people who picked them up on our weekend walk can remember anything about the habitat. Otherwise, all I can say is it was within a 1-2 hour walk from the Woodside campground at Salt Point State park.

I’d like to get them
By: Daniel B. Wheeler (Tuberale)
2012-03-27 15:45:17 EDT (-0400)

for identification by the OSU Forestry Lab at Oregon State University. Please dry and send them to
Daniel B. Wheeler
7714 SE Stephens
Portland, OR 97215

It would be helpful if you remember any nearby trees/shrubs, and also soil type this collection was found in, i.e. sandy loam, rocky, deep humus soil, etc. As indicated in the description below, if not found with Lodgepole pine (and from CA as indicated) may not be R. ochraceorubens.

According to How to Know the Non-Gilled Mushrooms by Smith, Smith and Weber, second edition (c. 1981), p. 309, this fungus should be “at first ochraceous, overlaid with brown rhizomorphs; hyphal incrustations and interhyphal debris magenta in KOH.” And “fruiting body 2-8 cm, golden yellow to tawny or in age russet, often tending to stain fulvous where injured, as dried and in contact with naphthalene (in the herbarium) vinaceous red to vinaceous brown; peridium tending to slough off in patches, FeSO4 on surface greenish to dark olive, KOH slowly reddish brown …”

“Under Lodgepole pine; summer and fall; British Columbia, Idaho, New Mexico, Oregon, Washington, and Wyoming; this is a common species in the Northwest.”

As with other Rhizopogons, of which Alexander H. Smith was the “expert”, we now accep that they are not always what they were first identified as. For a long time, Smith was known as the expert with the largest collection of Rhizopogons around. But a favorite quote of his indicated “… I also have the largest collection of unidentified Rhizopogons around too.”

For future reference, important to have photos of interior of fungi too, including any staining of the peridium (outer layer) next to the gleba, which is important to final identification. Rhizopogons should all be loculate (chambered). The size of the locules, spore size, and probable host plant(s) give a better indication of species.

Created: 2012-03-27 14:33:13 EDT (-0400)
Last modified: 2012-03-30 15:49:02 EDT (-0400)
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