Observation 158706: Rhodoarrhenia Singer

When: 2014-01-01

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

Who: Susanne Sourell (suse)

No specimen available

Species Lists


Proposed Names

29% (2)
Used references: For key see MO ’ Rhodoarrhenia’ http://mushroomobserver.org/name/show_name/24615?q=1rwv4
13% (3)
Recognized by sight: Many thanks to Dr. Jean Lodge for her input
Used references: Compare with Rimbachia paradoxa on Guyane website http://jlcheype.free.fr
28% (1)
Recognized by sight: long-stemmed, white, merulioid hymenophore, pale spore color

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= Observer’s choice
= Current consensus


Add Comment
Improving the knowledge about Neotropical Fungi
By: Susanne Sourell (suse)
2015-10-28 06:15:57 ACDT (+1030)

Danny, I certainly will let Jean know that her input is much appreciated. Dr. Lodge and several other experts in Neotropical Fungi (including you, Alan Rockefeller and many more Mushroom Observer Members) supported me in the most wonderful way with the identifications from my observations at Cristalino Lodge. The results will be published in a Field Museum Field Guide, which is nearing its publication. Please know that I am very grateful for your feedback, your mop and bucket work as well as always sharing your deep knowledge. Muchas gracias, dear Danny! You inspired me!

PS: I will let you know if I can get further input on the the two genera in question.

By: Danny Newman (myxomop)
2015-10-28 03:37:06 ACDT (+1030)

species seem to have long oscillated between these two genera. i don’t see a consensus in the literature on which combinations are the “correct” ones. Lloyd’s description of Rimbachia cyphelloides (along with Singer’s later recombination of Rhodoarrhenia cyphelloides) have been my primary points of departure in evaluating these fungi.

Can Dr. Lodge provide a bit more info as to why this is definitely Rimbachia, much less R. paradoxa, and definitely not Rhodoarrhenia or any of her member species? I would be very interested to know more.

Also, please convey my gratitude for working with these identifications. It is such a treat to see all these new proposals and to resume in depth conversations on Neotropical fungi!