Dear Esquivel, you do not want your firstonce thank you for the help in identifying? We are here to help you, but a little decorum is one of them.

To your mushroom: Again, this is strange to me, but there is an article of Huhndorf et al. (2009) Mycologia 101:904-919.

Now it looks like in the image as Amplistroma ravum. Should be new, for Panama, as is observed that: Known distribution. Costa Rica, known only from the type collection

Peter

Two requests: The images are very small, please adjust slightly larger and always declare the extent spores. Thank you

Here are the key: Huhndorf et. al.

KEY TO AMPLISTROMATACEAE

1. Ascomata formed in a stroma . . . . . . . . . . . . . . .. 2

1. Ascomata not stromatic, at times with a hyphal subiculum . . . . Wallrothiella congregata

2. Stroma texture cartilaginous when dry . . . . . . . 3

2. Stroma texture soft or crumbly when dry . . . . . . . . . . . . . Amplistroma tartareum

3. Stroma with polystichous ascomata. . . . . . . . . . . .. 4

3. Stroma with monostichous ascomata . . . . . . . . . . .. . . .Amplistroma ravum

4. Stroma surface more or less smooth with ascomatal necks barely erumpent.  . . . . . .

. . . . . . . . . . . . . . . . . . . . . . Amplistroma hallingii

4. Stroma surface rough, mostly with ascomatal necks distinctly erumpent . . . . . . .. . . . . . 5

5. Stromatal surface with white, cream to brown amorphous material, extensive or not . . . . . . . . . . 6

5. Stromatal surface without extracellular coating oramorphous material . . . . . . . . . . . . . 7

6. Stroma surface with extensive white to cream amorphous covering, stromal hyphae distinctly

brown and multilayered; ascospores 2.5–2.9 mm diam . . . . . . Amplistroma xylarioides

6. Stromal surface with some brown amorphous overing, stromal hyphae pale brown and not

distinctly layered; ascospores 1.7–2.2 mm diam. . . . . . . . Amplistroma diminutisporum

7. Stroma dark brown, appearing black when dry, interior dark .. . Amplistroma guianense

7. Stroma tan to dull brown, necks darker brown,interior cream to tan  . . Amplistroma carolinianum