Observation 127288: Boletellus Murrill

When: 2012-12-27

Collection location: Mountain Pine Ridge Forest Reserve, Belize [Click for map]

Who: kcsaxton

No specimen available

Spongeform “gills” suggest this to be a mature mushroom in the boletus group: spongy tissue off white and starting to turn a brownish grey, growing in tropical Caribbean pine forest. Cap roughly 3 1/2 inches across and stem a little over 4inches. Note slight beige staining on white stem where something has nibbled on the stem. The cap is not shaggy, but almost resembles the peaks of baked meringue.

Proposed Names

84% (3)
Eye3 Eyes3
Recognized by sight
81% (1)
Recognized by sight: Viscid, glutinous, rugulose pileus, partial veil (look at image #3,4,6,7)
Used references: Halling & Ortiz-Santana. 2009. A revision of Boletellus sect. Ixocephali. Mycological Progress 8: 237-244.

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


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Link to PDF
By: Roy Halling (royh)
2013-04-02 08:33:30 PDT (-0700)

can be found here: http://sweetgum.nybg.org/boletineae/taxon.php?irn=343446. Images from Belize also available courtesy of B. Ortiz-Santana.

This taxon
By: Roy Halling (royh)
2013-03-23 11:57:30 PDT (-0700)

had been erroneously called Boletellus jalapensis for some years. See the paper by Halling & Ortiz-Santana. 2009. A revision of Boletellus sect. Ixocephali. Mycological Progress 8: 237-244, where this issue was straightened out.

By: kcsaxton
2013-01-31 20:41:35 PST (-0800)

added cropped/enlarged versions of previous photos. You can almost see the pores. They look darker than I remember

By: kcsaxton
2013-01-30 21:01:12 PST (-0800)

Definitely shame on the guide. He was the only guide we had on the trip who wasn’t wonderfully professional. Others have said he was very good for their group. I guess guides can have a bad day. I later found a clear wing moth that mimicked a wasp and first he was frightened, and then he was bored as we passed my camera with the image around.

At any rate, I didn’t want to break the stem to get a photo of the pores, as this was the only one in the clump and we were in a reserve area. I’m really wishing I had, or could have gotten someone to bend the stem for me while I tried to get that photo. Obviously, I had to go run to catch up to the group. I didn’t get the feeling of pitting with age, that I see in the photos Tylopilus conicus, and unfortunately it doesn’t appear in my copy of Arora’s book. It really appeared to have grown that way, rather than degraded to that pattern.

Coolest mushroom I’ve ever found, and had I been in Oregon I’d have brought it home for a spore print. Thanks everyone!

Too bad you didn’t get a good shot of the pores.
By: Ron Pastorino (Ronpast)
2013-01-30 16:20:05 PST (-0800)

From the description of the pore color, a possibility could be a Tylopilus conicus, which usually have a shaggy cap but “often developing a network of ridges and small depressions in age”.(North American Boletes by Bessette et al).

Cool indeed
By: User_7
2013-01-30 15:45:20 PST (-0800)

Yeah it’s a really cool mushroom. Shame on the guide for shunning it. I can see the group walking off in the background as you photograph it.

By: kcsaxton
2013-01-30 07:42:15 PST (-0800)

Thank you for the explanation. I was trying to figure out how to get the system to accept boletellus or similar. If I can figure out how to change the vote, I very definitely will. This has to be one of the coolest mushrooms I’ve stumbled across. At home I have several experts to check with for Id’s, as well as my books. IN Belize I had a rather bored bird guide who wasn’t into much else.

By: User_7
2013-01-30 05:17:03 PST (-0800)

He doesn’t mean the mushroom is called “Boletellus Murrill”. Boletellus is the genus and Murill is the name of the person who first described the genus. It’s common practice to follow any latin names with the name of the person who described it.

Boletellus will contain many different species and they won’t all be available on a Google image search. Alonso just said that there are Boletellus species with furry, scaly, velvety and smooth caps. I think from the previous examples we can be confident that it is a Boletellus species :-)

You should change your vote now you understand the system better. Very nice Mushroom by the way.

El género
By: A. Cortés-Pérez (Alonso)
2013-01-29 21:56:44 PST (-0800)

Boletellus no solo está formado por hongos con píleo escamoso-flocoso, también hay especies con píleo liso, aterciopelado, superficie de los poros de color amarillo y esporas ornamentadas. Para mas información, http://www.mushroomexpert.com/boletellus.html


Not the same mushroom
By: kcsaxton
2013-01-29 21:44:11 PST (-0800)

Thank you for such a quick response, but the murrill is shaggy in the way a shaggy parosol or shaggy mane is, and this mushroom has clearly defined shaping on the surface that doesn’t appear to be degradation from growth

Created: 2013-01-29 21:23:03 PST (-0800)
Last modified: 2013-03-23 11:51:59 PDT (-0700)
Viewed: 255 times, last viewed: 2017-11-27 18:57:29 PST (-0800)
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