Here's a post that I saved from a prior message thread on a different forum on Tinder Fungus. It has some links to pictures and info.
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Re: Tinder Fungus
Author: Hangsaroundthefort
Date: 10-28-04 12:43
The fungi that Jas Townsend sells is "Inonotus obliquus"
If you do a google search, you will find many sites with info.
Look at:
http://www.pfc.forestry.ca/diseases/CTD/Group/Canker/lrg_images/fig44b.gif
http://ccfb.cornell.edu/biotaweb/LP98-000125.jpg
http://www.uni-greifswald.de/~mycology/gallery/Bilder/Inonotus obliquus.jpg
http://www.forestryimages.org/images/768x512/4213076.jpg
Frances Densmore also collected some in the early 20th from the Ojibwe in Minnesota. Even with the availability of matches and cloth, they still prefered to use the fungus.
http://anthro.amnh.org/images/full/502/502_1476ABC.jpg
http://anthro.amnh.org/images/full/502/502_1477C.jpg
If you find any, break it up/cut it up soon after harvest, when it is still a bit soft.
It takes a bit more work to catch than char cloth, but much more accurate in the great lakes.
Dave
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Birch trees grow around here in NE Iowa, but I have only found one chunk of tinder fungus on an old dead paper birch tree - so far. It is a disease on the tree, and will kill it. But I have picked up several chunks from friends that live in northern Minn. and Wisc. where it is much easier to find. You still have to do a lot of searching of trees, but it does occur more often up there.
Jas. Townsend is supposed to sell it. And several people list it over on evil-bay. It's not something that people normally have a lot of extra lying about to share with others. There are few who go the extra step to use it for their historical fire starting. But most still use charclothe - because it is easier, that's what they learned, and it is "accepted" in most places without the documentation to support it.
Just my humble thoughts to share. Take them as such.
Mikey - yee ol' grumpy German blacksmith out in the Hinterlands
p.s. M T - As Claude pointed out, the "attitude" of your second post really set wrong with a lot of people, especially with several who might have been able to assist you. Just my humble observation.