Observation 158580: Marasmius amazonicus Henn.

When: 2013-12-30

Collection location: Cristalino Jungle Lodge, Alta Floresta, Mato Grosso, Brazil [Click for map]

Who: Susanne Sourell (suse)

No specimen available

Stipe up to 15 cm long.

Proposed Names

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Micro is king, DNA needed too
By: Susanne Sourell (suse)
2015-03-10 12:20:44 PDT (-0700)

A sidenote: The original descriptions of Hennings and the description of Singer differ substantially. Hennings described a “blood red color” and did not mention any spots. Upon recommendation from Dr. Desjardin I contacted Dr. Jadson Oliveira of Instituto de Botânica (IBt), Sao Paulo, who proposed a study including molecular data (few barcode genes ITS or/and ef1-α) to evaluate spotted and unspotted specimens in a phylogram and in a distance matrix. Such would be awesome!

I am confident to secure specimen someday soon. Brazilian mycologists show a strong interest and offer support. Looking into synergies would be great, Danny! You do a great job in promoting Neotropical fungi and to increase the value of MO.

Even though the pictures are “ghosts of the forest” , they definitely increase curiosity.

my feeling
By: Danny Newman (myxomop)
2015-03-10 04:57:49 PDT (-0700)

is that with a Marasmius as large and charismatic as this one, we can make allowances for subtle differences in color. that some are more polkadotted than others could very, very well be an environmental variable. of course, micro is king, and this is a luxury we do not (yet) have.

rather than keep lamenting the lack of microscopy for these wonderful observations, what could we, the MO community, do to get you access to one in the future?

Same group? Same species?
By: Susanne Sourell (suse)
2014-02-16 12:29:54 PST (-0800)

Danny, thanks for providing the detailed description of Marasmius amazonicus. It was very helpful for ID.

The longer I look at this observation a question is to be raised: Is this observation closely related to M. amazonicus or is it even same species? There are some very small dots on the pileus. It is just a feeling, but observation http://mushroomobserver.org/158679?q=1neC7 might be also in the same group. The coloration of the the lamellae and the hymenium seems to be very variable.

By: Christian (Christian Schwarz)
2014-01-25 12:28:28 PST (-0800)
By: Britney Ramsey (Riverdweller)
2014-01-25 10:06:49 PST (-0800)

Created: 2014-01-25 09:51:44 PST (-0800)
Last modified: 2015-03-07 12:03:24 PST (-0800)
Viewed: 92 times, last viewed: 2017-12-25 09:14:12 PST (-0800)
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