Thursday, March 21, 2024

Oldie but goodie

Every now and then I come across these huge, messy, broken mushrooms. They're dark brown, sometimes almost black, almost shapeless, looking like stacked cow pies. And they hide in the darkest corners of the forest, where they blend in with crumbly, rotten wood, or the duff at the roots of old trees.

We came across a couple on top of a stump where trees have been felled, allowing sunlight to penetrate. And these still have kept their shape.

Old Dyers' polypore

Second stack.

And they are intact enough to show the bands of darker colour near the edges.

I've posted photos of a typical messy one, a couple of years ago:

Stacked cow pies.

I gave up trying to identify this one. Another one I found later, with yellow bands and all, I just called "shelf fungi".

Taken with flash. Without, I couldn't see the yellow.

I keep looking for unbroken examples and never seem to find any. But actually, I have, and didn't realize it; when I finally identified the latest ones as Dyer's polypores, Google came up with hundreds of photos. Except that mostly, this is not what they look like. Young, they're pale brown, with yellow or white edges and bands. I've probably seen them many times, thinking they were possibly turkey tails. Large turkey tails; Dyers' polypores grow up to 30 cm. across.

Here's a young specimen, found on iNaturalist, and found just south of here. iNaturalist has dozens of reports from local sites.

Image by sooillus, Creative Commons.
Young fruiting bodies are little more than yellowish, velvety blobs. (FungusFactFriday)
Here's a photo of a youngster, by Michael Kuo, on MushroomExpert.Com:

A yellowish, velvety blob.

These mushrooms are durable; the big, dark ones I've been finding are last year's fruiting bodies. 
When the mushroom first emerges, the entire surface is covered in velvety yellow tissue that stains brown immediately when touched. This is the mushroom’s actively growing surface. As a testament to this fact, the stains on the tissue don’t last long; within an hour or two bruised areas become bright yellow again as new growth covers up the injury (amazingly, this can happen even after a mushroom has been picked). (FungusFactFriday)
I'll try that on the next "yellowish, velvety blob" I find.

~~~~~~~~~~~~~~~
De vez en cuando encuentro unos hongos muy grandes, medio desbaratados, de color café oscuro hasta casi negro. A veces es difícil identificarlos como hongos; más bien parecen madera podrida. Y se esconden en los sitios más oscuros del bosque.

Encontramos dos encima de un tocón cerca de donde habían caído unos de los árboles, dejando entrar unos rayos de luz. Y éstos todavía se mantienen casi enteros.

Fotos:
1, 2. Phaeolus schweinitzii, el poliporo de los teñidores. Hasta preservan las bandas de color.

3. Hace dos años, subí esta foto de uno más típico. No pude identificarlo.

4. Luego encontré éste, y con el flash se veían las bandas amarillas. Hongo repisa, dije, sin saber la especie.

Siempre estoy buscando ejemplares enteros, sin encontrarlos. O así pensaba. Resulta que los he visto muchas veces, creyendo que eran "colas de pavo". Una vez que identifiqué estos últimos como 
Phaeolus schweinitzii, Google me dió cientos de fotos. Lo que pasa es que normalmente no se parecen a estas masas oscuras. Nuevos, son hongos de un color café claro o hasta crema, con bordes y bandas blancas y amarillas. 

5. Un poliporo de los teñidores joven; esta foto la encontré en iNaturalist, y es uno de docenas registrados muy cerca de aquí. 

6. "Los cuerpos fructíferos nuevos son apenas unas masas amarillentas, aterciopeladas." (FFF) Esta foto fue tomada por Michael Kuo, (MushroomExpert.com)

Los hongos no desaparecen al final de la temporada; los que están completamente cafés son los del año pasado.
Al principio, cuando el hongo apenas brota, toda la superficie está cubierta de terciopelo amarillo, el cual se vuelve café de inmediato al tocarlo. Esta es la superficie que está en crecimiento activo, lo que se puede comprobar viendo que las manchas en el tejido no duran; dentro de una o dos horas las areas entintadas vuelven a recuperar su color amarillo brillante, con tejido nuevo que cubre la parte dañada. (Sorprendentemente, esto puede ocurrir aun cuando el hongo ha sido cortado.) (FungusFactFriday)
Voy a hacer la prueba en el próximo "masa amarillenta, aterciopelada" que encuentro.

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