Observation 114324: Marasmiaceae sensu lato

When: 2012-10-18

Collection location: Cortadura, Veracruz, Mexico [Click for map]

1950m

Who: Alan Rockefeller (Alan Rockefeller)

Specimen available

Notes:
On hardwood.

Herbarium specimen is in the “Cortadura 2012” bag.

Spores oblong, rough, 6.5 × 4.5, 8 × 6, 8 × 6, 7 × 6.

Gill cystidia absent.

Pileus hyphae staining yellow in melzers.

Species Lists

Images

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IMG_9136.JPG
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IMG_9141.JPG
IMG_9142.JPG
IMG_9143.JPG
IMG_9258.JPG
Gill edge 400x
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Hyphae 400x
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Hyphae 400x
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Spores 1000x
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Gill cross section 25x, with congo red
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Gill edge 400x
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Gill tip 100x
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Gill cross section 100x
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Pileus cross section showing pileipellis, lamellar trama/pileus trama and gill edges. 100x
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Pileipellis 100x
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Gill edge with lamellar trama hyphae spilling out 100x
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Gill crush mount 400x
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Gill crush mount 400x
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Pileipellis 400x
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Cap hyphae 1000x
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Gill 100x, stained with melzers

Proposed Names

31% (3)
Recognized by sight
31% (2)
Used references: micro will say everything
-14% (3)
Recognized by sight: Yellow, marasmioid, intervenose lamelleae, short strigose base, on wood

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

= Observer’s choice
= Current consensus

Comments

Add Comment
that
By: Danny Newman (myxomop)
2013-07-30 01:13:56 CDT (-0400)

or Dennis goofed/skimped on important details, and INBio had access to a better description which actually fits both of these. after all, the discrepancies in Dennis’ description are more in terms of features which he doesn’t describe at all as opposed to ones which are in conflict with features we’re seeing here.

I think what we’re seeing here
By: Christian (Christian Schwarz)
2013-07-30 01:04:03 CDT (-0400)

is that INBIO misinterpreted the name early on, but attached it to a good quality photo and thus propagated a naming error (ie. a wrong name for a recognizable thing)

I’ll concede that these
By: Danny Newman (myxomop)
2013-07-30 00:54:52 CDT (-0400)

may be the same species, but Dennis’ description of M. rhyssophyllus (see name page) neglects to mention basal strands/tomentum, the uneven margin, striations, eccentric attachmnent, pleurotoid habit, and calls the gills “rather crowded.” these micrographs also show no inflated terminal cells in the pileus, nor “thin-walled, irregular, vesicular hairs about 40 × 15µ” along the gill edge. would be helpful to compare these to another, newer description.