Observation 82611: Sistotrema confluens Pers.
When: 2011-11-14
No herbarium specimen

Notes: Under Abies.

Odor and flavor nutty.

Proposed Names

-29% (2)
Recognized by sight
28% (1)
Recognized by sight
53% (1)
Recognized by sight: I forgot the species name, but I saw this when I was in Mexico, I’m pretty sure its a sistotrema
60% (2)
Used references: http://www.flickr.com/photos/23151213@N03/2911132594/
Eriksson, John, Kurt Hjortstam and Leif Ryvarden. 1984. The Corticiaceae of North Europe 7, Schizopora – Suillosporium. Fungiflora, Oslo, Norway. 167p.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Darvin DeShazer (darv)
2011-11-16 21:58:52 PST (-0800)

Several books say the stipe can be central to lateral, usually it’s eccentric to lateral.

brilliant, pogon
By: Danny Newman (myxomop)
2011-11-16 20:18:34 PST (-0800)

S. confluens has been reported from Mexico (http://www.ejournal.unam.mx/bio/BIOD77-01/BIOD770105.pdf)

Here’s those authors’ description (based on all Mexican material):

Sistotrema confluens Pers. : Fr. Syst. Mycol. 1: 426, 1821.
Figs. 34-36

Basidioma anual, lateralmente estipitado, flabeliforme
a espatulado, infundibuliforme, carnoso cuando fresco,
quebradizo al secar. Píleo de 7-18 × 12-30 × 2-15 mm,
de color blanquecino (4A2) a amarillento (4A3), glabro a
finamente tomentoso, con finas grietas radiales, ligeramente
zonado. Margen estéril, agudo, incurvado hacia adentro,
de blanquecino a amarillo pálido (4A2), en algunas partes
hasta de 2 mm de ancho. Himenóforo con poros de 1-4
por milímetro, de color amarillo pálido (4A2), angulares a
irregulares con el borde dentado a lacerado. Tubos concoloros
con el himenóforo, hasta de 3 mm de profundidad. Estípite
cilíndrico, poco ensanchado hacia la base, de 6-10 × 2-4 mm,
concoloro al píleo, fi namente tomentoso, glabro, lateral.
Contexto simple, hasta de 2 mm de grosor, blanquecino a
crema (4A2), carnoso.

Sistema hifal monomítico, hifas generativas de 2.4-
3.2 μm de diámetro, con fíbulas y sin fíbulas, ramifi cadas,
hialinas a amarillentas, de pared delgada, inamiloides.
Cistidios ausentes. Basidios de 18.2-24.8 × 5.6-7.2 μm,
clavados a cilíndricos, de pared delgada, hexaspóricos, con
esterigmas hasta de 2.4 μm de longitud, hialinos, inamiloides.
Basidiolos de 13-15 × 4.8-6.4 μm, clavados, pared delgada,
hialinos e inamiloides. Basidiosporas de 4.0-5.6 × 2.4-3.2
μm, cilíndricas, cortas a oblongas, lisas, de pared delgada,
hialinas e inamiloides.

first major discrepancy: laterally vs. centrally stipitate. fits well for observation 52672 but not here…

Other useful texts:

Gorjon, S.P, and N Hallenberg. “New Records of Sistotrema Species (Basidiomycota) from the Iberian Peninsula.” Sydowia. 60.2 (2008): 205-212. Print. (spgorjon.webs.com/Publicaciones/2008Sistotrema.pdf) **key eliminates all taxa other than S. confluens in first couplet upon selecting ‘stipitate’.

Greslebin, Alina G. “Sistotremateae (Corticiaceae, Aphyllophorales) of the Patagonian Andes forests of Argentina.” Mycological Research. 105.11 (2001): 1392-1396. Print. (can’t find a freely available copy)

By: Danny Newman (myxomop)
2011-11-16 17:54:44 PST (-0800)

if you look closely, you’ll see that what look like teeth are actually elongated pores (the definition of the rather obscure vocab term ‘irpicoid’).

very interesting
By: Danny Newman (myxomop)
2011-11-16 16:52:38 PST (-0800)

i looked all over the web for centrally-stipitate, irpicoid, terrestrial polypores… and found nothing.


Created: 2011-11-15 13:51:29 PST (-0800)
Last modified: 2012-03-05 16:09:30 PST (-0800)
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