Observation 116012: Podosordaria entosulphurea (J.D. Rogers, F. San Martín & Y.M. Ju) J.D. Rogers, Y.M. Ju & F. San Martín

When: 2012-08-31

Collection location: La Tortuga, Sierra de Cacoma, Jalisco, Mexico [Click for map]


Who: Alan Rockefeller (Alan Rockefeller)

Specimen available

The cap has an interesting crunchy texture.

Growing on well decayed wood.

Spores smooth, inequilateral, 10.5 – 13 × 5 – 6.5 µm, with 1 or 2 oil droplets per spore. 8 spores per ascus. Asci walls invisible in KOH.

Spore measurements:

10.6 [11.4 ; 12] 12.8 × 4.8 [5.5 ; 6] 6.6 µm
Q = 1.7 [2 ; 2.2] 2.4 ; N = 15 ; C = 95%
Me = 11.7 × 5.7 µm ; Qe = 2.1

Species Lists


Pileus scalp section 25x
Pileus scalp section 100x
Pileus scalp section 400x
Spores 1000x

Proposed Names

27% (1)
Recognized by sight
50% (3)
Recognized by sight: habitat seems wrong unless there was dung in the surrounding soil.
29% (1)
Recognized by sight: Close, but Podosordaria truncata has larger ascospores and lacks the yellow tinge just under the surface.

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Wouldn’t you know,
By: Danny Newman (myxomop)
2013-02-24 16:11:34 CST (-0500)

one of the authors of the name (and an all around wizard with Xylariales) is an active AscoFrance member. We cleared up the minor discrepancies in the description of P. entosulphurea and the seemingly contradictory features of this fungus. The stipe ribbing/striation is probably a characteristic of old and/or dried material. The report of P. entosulphurea occurring on dung was the product of a less than clearly worded ‘notes’ section in the description of P. elephantii. In actuality, it is only known from woody substrates. The stated stipe width of 1mm is still problematic (possibly a typo), but virtually every other character is a perfect match (spore size & shape, sub-perithecial pigment, habitat, etc.).

What a great, great find. May fungus wonders never cease.

By: Danny Newman (myxomop)
2013-01-15 17:43:46 CST (-0500)

I can only find references to yellow/orange sub-perithecial pigment in P. entosulphurea and P. elephanti. However, both are said to have striate stipes, P. entosulphurea’s being 1mm in diam. P. elephanti is fimicolous and quite differently proportioned (see http://mycology.sinica.edu.tw/...). It would appear that much of the research that exists is from Mexican material (the type is P. mexicana). This could be new…


Rogers, J.D.; San Martin, F.; Ju, Y.-m. “Mexican fungi: Xylaria entosulphurea sp.nov. and neotypification of Entonaema globosum.” Mycotaxon 58 (1996), 483-487. [http://www.cybertruffle.org.uk/...]

Rogers, J.D.; Ju, Y.-m.; San Martín, F. “Podosordaria: a redefinition based on cultural studies of the type species, P. mexicana, and two new species.” Mycotaxon 67 (1998), 61-72. [http://www.cybertruffle.org.uk/...]

By: Danny Newman (myxomop)
2013-01-15 17:19:33 CST (-0500)

from Rogers, J.D.; Ju, Y.-m.; San Martín, F. “Podosordaria: a redefinition based on cultural studies of the type species, P. mexicana, and two new species.” Mycotaxon 67 (1998) pg. 66.

hummm… icecream fungi, wow
By: Elsa (pinknailsgirl)
2013-01-15 16:33:32 CST (-0500)
I mentioned this
By: Danny Newman (myxomop)
2013-01-15 13:10:09 CST (-0500)

to Thomas Læssøe ages ago but never heard back. He said in some publication of his that, while uncommon, yellow does occur in Xylariaceous fungi, so I assume he’d have something worthwhile to offer here.

edit 1/20/2013: this is the reference: http://www.mycokey.com/BurkinaFaso/Xylaria.htm

I still have it
By: Alan Rockefeller (Alan Rockefeller)
2013-01-14 22:47:08 CST (-0500)

but have not scoped it yet.

By: Roo Vandegrift (Werdnus)
2013-01-14 22:25:03 CST (-0500)

This is the coolest fungus I’ve seen in a while! Did you ever get the chance to look at it under the microscope? I’d love to know what the spores are like. It looks sort of like a Poronia, or a Podosordaria, but that yellow colour is just amazingly ridiculous. It’s beautiful, thanks for sharing!

I’ll look for it
By: Alan Rockefeller (Alan Rockefeller)
2012-11-07 15:13:15 CST (-0500)

It’s probably in a bag labeled ?

agreed! now if we can see what it is hiding under the scope!!
By: Jonathan M
2012-11-07 15:01:15 CST (-0500)
By: Danny Newman (myxomop)
2012-11-07 13:46:25 CST (-0500)

top 10 most interesting Mexico observations to date. agreed, it’s Xylariaceous, but the yellow??

Created: 2012-11-07 13:04:23 CST (-0500)
Last modified: 2013-02-24 17:24:57 CST (-0500)
Viewed: 410 times, last viewed: 2018-03-12 12:03:42 CDT (-0400)
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