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#1
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Specimen ID
I found an usual clump in an outside corner of a door and figured that
it was another wasp nest. Nope. It was fiber-like and very black inside, of powder consistency. I figure that it is a fungus. The "spores" look like pollen but differ in the protrusions that one would see on white blood cells. The following are links to images of this stuff. Anyone have a clue to what this is? http://www.microtechnics.com/fungi-1kx-1ann.jpg http://www.microtechnics.com/fungi-10kx-1ann.jpg AFAIK, there is no mycology group. Gary Gaugler, Ph.D. Microtechnics, Inc. Granite Bay, CA 95746 916.791.8191 gary@microtechnics dot com |
#2
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Dear Gary,
Most interesting! Clearly you have a scanning electron microscope at work. I used to do a lot on plant specimens. How did you prepare the specimens prior to photography? My suspicion is that you sprinkled the "spores" on a stub, maybe attaching them with double sided tape, and then gold coated??? I suspect that the "sucked in" look is probably an artefact, but you could only overcome this if you fixed the specimens and used a critical point drier. My absolute guess is you have something like a puffball, but I am not great at fungi, and certainly not Californian fungi (I am in the UK!). Maybe if you put up a photo of the "clump" it might aid in the ID. I shall watch this string to see if we get anywhere! Best Wishes, Martin Hodson Gary G wrote: I found an usual clump in an outside corner of a door and figured that it was another wasp nest. Nope. It was fiber-like and very black inside, of powder consistency. I figure that it is a fungus. The "spores" look like pollen but differ in the protrusions that one would see on white blood cells. The following are links to images of this stuff. Anyone have a clue to what this is? http://www.microtechnics.com/fungi-1kx-1ann.jpg http://www.microtechnics.com/fungi-10kx-1ann.jpg AFAIK, there is no mycology group. Gary Gaugler, Ph.D. Microtechnics, Inc. Granite Bay, CA 95746 916.791.8191 gary@microtechnics dot com |
#3
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Hi Gary,
I also have access to an SEM and have looked at fungus spores quite a bit. Yours don't look familiar to me, but your description of the fungus does not correspond to anything I have looked at. If you look at David Arora's "Mushrooms Demystified", you will see that he gives a description of the spores of most species in the western US. Usually this has the shape, length range and surface morphology briefly mentioned. To find the species, though, you probably would not start from the spore. Rick Albuquerque. wrote in message ups.com... Dear Gary, Most interesting! Clearly you have a scanning electron microscope at work. I used to do a lot on plant specimens. How did you prepare the specimens prior to photography? My suspicion is that you sprinkled the "spores" on a stub, maybe attaching them with double sided tape, and then gold coated??? I suspect that the "sucked in" look is probably an artefact, but you could only overcome this if you fixed the specimens and used a critical point drier. My absolute guess is you have something like a puffball, but I am not great at fungi, and certainly not Californian fungi (I am in the UK!). Maybe if you put up a photo of the "clump" it might aid in the ID. I shall watch this string to see if we get anywhere! Best Wishes, Martin Hodson Gary G wrote: I found an usual clump in an outside corner of a door and figured that it was another wasp nest. Nope. It was fiber-like and very black inside, of powder consistency. I figure that it is a fungus. The "spores" look like pollen but differ in the protrusions that one would see on white blood cells. The following are links to images of this stuff. Anyone have a clue to what this is? http://www.microtechnics.com/fungi-1kx-1ann.jpg http://www.microtechnics.com/fungi-10kx-1ann.jpg AFAIK, there is no mycology group. Gary Gaugler, Ph.D. Microtechnics, Inc. Granite Bay, CA 95746 916.791.8191 gary@microtechnics dot com |
#4
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In article ,
Gary G see.signature@bottom wrote: I found an usual clump in an outside corner of a door and figured that it was another wasp nest. Nope. It was fiber-like and very black inside, of powder consistency. I figure that it is a fungus. The "spores" look like pollen but differ in the protrusions that one would see on white blood cells. The following are links to images of this stuff. Anyone have a clue to what this is? I wonder if it could be the sporangium (probably not the current correct technical term) of a true slime mold, perhaps Fuligo septica, which produces a crumbly lump, rather than the forest of tiny sporangia most other Myxomycetes do. Myxomycetes used to be in the Kingdom Fungi (Myxomycetales) but some time ago they got thrown out and are now in the Protista like a number of other strange organisms of uncertain affinity. They certainly have as much claim to be protozoans as fungi, but not both! These organisms live on bacteria and are often found in dead organic matter, like compost heaps and rich soil. Most are small and not very visible, but some can grow into a network of bright colored strands a meter or more in diameter. Since they are motile, it's quite surprising to most people to go out in their garden in the morning and find it festooned with bright yellow gooey strings of a slime mold plasmodium that has crawled out of the mulch overnight, getting ready to sporulate. You could try "hatching" some spores by moistening them. If they are myxomycetes, you may get a population of the haploid stage which look like flagellates or amoebae, depending on the moisture level. These bogus protozoa multiply by division, but eventually some may fuse to form the net-like diploid plasmodial stage, which can grow large and eventually forms the structure you may have found. I may be leading you astray here, a bit, since I'm not familiar with the details of F.septica's life cycle, but the above describes the cycle of some other species. I used do work on the genetics of myxomycetes. AFAIK, there is no mycology group. There's a bionet.mycology. See if you can find an image on the net of F.septica's fruiting body, whatever it's called these days. Let us know what you find out. |
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