Observation 181963: Ascocoryne J.W. Groves & D.E. Wilson

When: 2014-09-12

Collection location: Arenal Hanging Bridges, Alajuela, Costa Rica [Click for map]

Who: Leah Bendlin (Leah Bendlin)

No specimen available

On wood

Proposed Names

28% (1)
Recognized by sight
-61% (2)
Recognized by sight
-28% (1)
Recognized by sight:
Used references: Multiple species described from the Neotropics, though none that I can find reported as occurring on woody substrates (which I always find this on) in rain and/or cloud forests. see: http://www.scielo.org.ar/pdf/bsab/v42n1-2/v42n1-2a13.pdf
-28% (1)
Recognized by sight
-28% (1)
Recognized by sight

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Danny Newman (myxomop)
2016-02-25 18:17:46 CST (-0500)

I’ve added my own observation of this fungus at Observation 233594

Thank you Danny
By: Leah Bendlin (Leah Bendlin)
2015-03-30 19:38:10 CDT (-0400)

…for all of the information! And the reminder to be more diligent in specifics. I will take it to heart. I have deleted the problematic photos and created two new observations in light of that. Another sighting at a different area of the same location: http://mushroomobserver.org/202096 and the photos from another day & location: http://mushroomobserver.org/202095

By: Danny Newman (myxomop)
2015-03-30 03:03:20 CDT (-0400)

David Minter sums up nicely the described species of Acrospermum described from South America (how I wish he’d made it the whole Neotropics) in the paper I linked in the Acrospermum name proposal:

“The following Acrospermum species and varieties were described originally from South America: Acrospermum antarcticum Speg. (Argentina: Tierra del Fuego, Staten Island, Port Cook), A. antennariicola Speg. (Argentina), A. bignoniicola Henn. (Brazil), A. bromeliacearum Theiss. (Brazil: San Leopoldo), A. coniforme Speg. (Argentina), A. corrugatum Ellis (Chile: Straits of Magellan, Punta Arenas), A. minutum Henn. (Brazil), A. ochraceum Syd. & P. Syd. (Brazil: Rio de Janeiro, Tijuca), A. puiggarii Speg. (Brazil: Apiahy), A. syconophilum Speg. (Argentina: Misiones, Puerto León).”

plus the species he describes in that paper, A. chilense.

Proceeding from the perhaps hasty assumption that species described from more arid, Nothofagus, Patagonian or Chilean forests are not relevant, nor those species said to occur on mosses, herbacious plants, leaves or grasses (including bamboo), that doesn’t leave many options. A. minutum and A. bignoniicola are only possibilities if the word ‘Blättern’ does not mean leaf, as in “on leaves of,” as this is definitely lignicolous, not foliicolous. Here is Hennings’ original description of both, from Hedwigia 36: 231 (1897):

Then there is A. corrugatum, which grows on wood but was described from Utah, which was transfered to Glyphium (which this is not). This makes sense given its description as carbonaceous throughout all stages of development, unlike Acrospermum which is predominantly cartilaginous-fleshy.

There is A. scyconophilum, for which I only have access to an illustration of Spegazzini’s, seen here:

which does not at all resemble the outline of this fungus.

All that remains is to compare with species described from Central America, or those described outside the Neotropics altogether which may so happen to have a distribution which includes the Neotropics, or any species described since Minter’s paper on A. chilense, which has been my primary reference in this investigation. The entire inquiry is, of course, based on the macromorphological similarities observed between the fungus pictured here and Google images of A. compressum, such as the one in the Acrospermum name proposal. That could all prove to be a dead end line of reasoning, though as always, a strong confirmation or denial will likely only come in the form of microscopy on fertile material, which appears to be an impossibility for this observation as no herbarium specimen has been reported.

By: Danny Newman (myxomop)
2015-03-29 18:52:10 CDT (-0400)

I’m seeing that your last two images were taken five days apart from the others. That makes this a Mixed collection. Please remove images 6 and 7 and upload them as a separate observation.

Even when photographing the same species — or what one believes to be one species — (which these may or may not be, difficult to tell when we’re not really sure what it is!) from the same area, observations are supposed to contain only what a given user “observes” in a single instance. We have some examples on the site of observations which are “updated” with photographs of the exact same fruiting bodies after they’ve been left to mature for some time, but this is really the only exception, and even those will occasionally result in Mixed collection-style cases of mistaken identity from time to time.

Tell us more about the last two images once you’ve created a new observation for them, and I’ll create a new species list to join them with these.

Reviewed Ecuadorian photos
By: Danny Newman (myxomop)
2014-10-08 13:52:47 CDT (-0400)

This is definitely a thing apart. We should have our box by the end of this year. Hopefully before the end of the next one, we’ll have a name for this.

edit: Jonathan M may have more to offer.

Sorry about the confusion
By: Leah Bendlin (Leah Bendlin)
2014-10-08 12:06:30 CDT (-0400)

Ah! I apologize if I didn’t make it clear, I sent you two collections- I do not have reason to believe that they are the same species. They were from the same park, but not close to each other at all. So the mystery continues…

By: Danny Newman (myxomop)
2014-10-08 09:40:06 CDT (-0400)

In the original set of photos you sent me, there were fruiting bodies with yellow heads on black “stems” fused at their bases to a raised, black pad or platform. It looked like these purple forms were young and intermediate stages of F. wrightii / S. stromaticum, but now I’m not so sure. To be clear, some of what you sent me is definitely that species.

I may get an answer by going through my own undeveloped photos (the backlog is enormous). Will post back here soon. Sorry for the confusion and thanks for posting.

Created: 2014-10-08 00:55:07 CDT (-0400)
Last modified: 2017-05-12 17:30:34 CDT (-0400)
Viewed: 342 times, last viewed: 2018-01-07 18:32:55 CST (-0500)
Show Log