After a cold October the first week of November has seen temperatures near 70 degrees each day and this has encouraged the crop of fall mushrooms. The oyster mushrooms in the above photo grew on the underside of a fallen tree. Though they often appear to have no stem oyster mushrooms have off center stems that usually grow out of the side of the log and are hidden by the cap.
Mushrooms are often eaten by tiny worms called nematodes that live on plant and fungal tissue, but not oyster mushrooms. Scientists discovered in 1986 that oyster mushrooms “exude extracellular toxins that stun {nematode] worms, whereupon the mycelium invades its body through its orifices.” What this means is that oyster mushrooms are carnivorous. They also consume bacteria (Pseudomonas and Agrobacterium) in order to get nitrogen and protein.
One of the things that attracts me to mushrooms is the wide variety of beautiful colors and shapes they come in. I think these pink and red ones that I saw growing out of the side of a log might be clustered collybia (Gymnopus acervatus,) but I’m not certain of that. My mushroom books say that clustered collybia is a common fall mushroom but I’m not sure that I’ve seen it.
Mushroom spores are carried by the wind so it is unusual to see them dropping to the forest floor like they have in the above photo. I’ve only seen this happen twice and each time it was on a still, humid day.
Jelly fungi like the witch’s butter (Tremella mesenterica) in the above photo seem to start appearing when it gets colder in the fall and many can be found right through winter, even though they sometimes freeze solid. I almost always find them on stumps and logs; often on oak. After a rain is the best time to find them.
If you roll logs over like I do you’ll see some astoundingly colorful examples of crust fungi, like the blue example in this photo. I find this one a lot on oak logs, especially. Though I’ve tried for a year now I haven’t been able to identify it, so if you know what its name is I’d love to hear from you.
Velvet shank mushrooms (Flammulina velutipes) are a common sight in winter because they fruit very late in the season and sometimes even during a warm spell in winter. I’ve seen them a few times when there was snow on the ground and it’s always a surprise. The orange caps of these mushrooms often shade to brown in the center. The stem is covered in fine downy hairs and that’s where this mushroom’s common name comes from.
These older examples of velvet shank mushrooms on the same tree looked as if they had been dusted with confectioner’s sugar but it turned out to be mold. Nothing is wasted in nature; everything gets eaten in one way or another.
Puffballs and little brown mushrooms vie for space on a log. The mushrooms reminded me of vanilla wafer cookies.
Milk white toothed polypore (Irpex lacteus) is a crust fungus common on fallen branches and rotting logs. The teeth start life as tubes or pores in the spore bearing surface, which breaks apart with age to become tooth like as the above photo shows. As they age these “teeth” will turn brown and that’s how I usually see them. This example was very fresh.
Lemon drops (Bisporella citrina) look like tiny beads of sunshine that have been sprinkled over logs, but they are really sac fungi with stalked fruit bodies. The term “sac fungi” comes from microscopic sexual structures which resemble wineskins. There are over 64,000 different sac fungi, including cup and “ear” fungi, jelly babies, and morel mushrooms. Lemon drops start life as a tiny yellow disc and look as if they lie flat on the log, but each disc hovers just above the surface on a short stalk. As they age each disc will become cup shaped. The “citrina” part of the scientific name comes from the Latin citrin, and means “lemon yellow.” The smaller ones in the above photo are barely as large as a period made by a pencil on paper.
At first I thought this was some kind of strange crust fungus but as I looked closer I realized that it had to be a slime mold, which I don’t usually find this late in the year. After some digging I found that it is called the yellow-fuzz cone slime mold (Hemitrichia clavata.) The fruiting bodies of this slime mold open into goblet shaped cups filled with yellowish fuzzy threads which makes the mass look like felt fabric. Though it appears very orange to me my color finding software tells me that it is indeed yellow. Other examples I’ve seen in the past have been bright, lemon yellow.
I don’t know the name of this tiny mushroom I saw growing on a twig but its shape reminded me of the beautiful dome on the Taj Mahal in India. Wouldn’t it be something if the idea for that type of architecture originally came from a mushroom? I’m convinced that the idea for the beautiful and ancient Chinese blue and white porcelain came from silky dogwood berries (Cornus amomum,) pleasingly dressed in the same blue and white for a short time in summer.
Mycelium is the vegetative part of a fungus, consisting of a mass of branching, thread-like hyphae. When mushroom spores grow they produce mycelium, which eventually produces fruit, which is the aboveground part that we see. The mycelium in the above photo grew on the underside of an oak log that was in contact with the soil. Most of the mycelium that I see are white but they are occasionally yellow like those pictured.
I think that the crust fungus in the above photo might be an example of an orange crust fungus (Stereum complicatum.) This small fungus has a smooth whitish underside with no pores. The complicatum part of the scientific name means “folded back on itself” and the above photo shows this example just starting that folding. It likes to grow on the logs of deciduous trees.
Wrinkled crust fungi (Phlebia radiata) lies flat on the wood that it grows on, much like a crustose lichen would, and radiate out from a central point. They have no stem, gills or pores and they don’t seem to mind cool weather; the two I’ve seen have been growing at this time of year. I think they’re a very beautiful mushroom and I’d like to see more of them.
To be surprised, to wonder, is to begin to understand. ~Jose Ortega Y Gasset
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New Hampshire Garden Solutions 