It was going to be another too-hot day. I went out in the morning, looking for the deepest, darkest, coolest area of rainforest nearby, preferably alongside a river for added freshness. The Beaver Pond trail beside the Quinsam River fit the bill.
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| Even here the sunlight filters down. But everything is damp, even the tree trunks. |
A few steps along the trail from this photo, I found a rotted log colonized by fungi and a slime mold.
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| Ceratiomyxa fruticulosa, the Common Coral slime. Also called White-Fingered Slime Mold. |
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| The name, Ceratiomyxa, translates as "waxed mucus". Fruticulosa means "very bushy". |
I touched the smeared spot at the top; it was damp, very soft, and cold.
... slime molds form structures called plasmodia which are naked (i.e., without cell walls) masses of protoplasm which can move and engulf particles of food in an amoeboid manner. Slime mold plasmodia creep about over the surfaces of materials, engulfing bacteria, spores of fungi and plants, protozoa, and particles of nonliving organic matter. At some point, plasmodia convert into spore-bearing structures. In Ceratiomyxa fruticulosa, the plasmodium converts into a clustered mass of stalks bearing spores on their surfaces. (MushroomExpert)
Also present: below the slime mold, there's a fallen Douglas-fir needle, colonized by some fungus or lichen, making black dots and lines. It helps to show the size of the slime mold stalks; the needle is about 2 cm. long.
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Iba a hacer calor otra vez. Salí temprano, buscando el bosque pluvial más oscuro, más en sombra, menos tostado por el sol, con preferencia cerca de un rio, por la frescura que da agua corriente. Escogí el sendero de la Laguna de los Castores siguiendo el Rio Quinsam.
- El bosque. Aun aquí logra filtrarse la luz, pero no tanto como para secar el area. Todo está húmedo, hasta los troncos de los árboles.
- Un moho mucilaginoso, Ceratiomyxa fruticulosa en un tronco podrido. Lo encontré a unos pocos pasos de donde saqué la foto anterior.
- El nombre, Ceratiomyxa, del Latín y Griego, significa "moco encerado". Fruticulosa quiere decir "como arbusto denso".
... mohos mucilaginosos forman estructuras llamadas plasmodios, masas de protoplasma multi-nucleadas (sin paredes celulares) que se pueden mover y envolver partículas de alimento a manera de las amebas. En algún momento, los plasmodios se convierten en estructuras productoras de esporas. En Ceratiomyxa fruticulosa, el plasmodio se convierte en una masa aglomerada de tallos que llevan esporas en la superficie. (MushroomExpert)
También se ve debajo del moho, una aguja de abeto de Douglas, que ha sido atacado por un hongo o tal vez un liquen, que la ha marcado con puntos y lineas negros. Sirve para dar una idea del tamaño de los tallos del moho; la aguja mide aproximadamente 2 cm. de largo.




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