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Austroboletus Gracilis


EatTheWeeds

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Found these yesterday. There were conifer trees in the same forested area, however none near these guys.  The caps were extremely spongy.  Some of them stained brown as can be seen, and others (not pictured) looked identical, but stained a dark purple-brown.  After taking the photos, I realized that the smaller one shown might not be the same species, but it was growing with them.  The system were fibrous.

What could they be?

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Austroboletus gracilis  makes sense to me (including the smaller one). I usually find this species under hemlock, but Boletes of Eastern North America says it also occurs under "broadleaf trees". Spore print should be pinkish brown (which is why this species had previously been placed in genus Tylopilus). The caps of this type are usually composed of mostly the tubes, so the consistency is spongy. 

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Hi Dave.  Maybe I should've done more research before posting, or perhaps I've done too much research now!  I was looking, and the cap and description began to resemble Tylopilus indecisus to me...  Maybe I'm over thinking this because nearby, I also found a bunch of what I'm guessing are tylopilus rubrobrunneus?  I'll post photos of these in a minute...  the trees both were directly under were mainly oak.

I went back and gathered more of both mushrooms...  The pores on these pull away from the cap very easily.  Gonna try to get a spore print next.

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Interesting. I think the one with the thick stalk (group photo) is different than the others. And, the thinner ones are on the pale side for A. gracilis (although color varies somewhat for this species). The thick one is very likely a species of Tylopilus, maybe indecisus, although the cap is kinda pale. The brown-capped Tylopilus species are apt to fade in age. 

So, not a great deal of confidence overall. In the original photos, the small maroom one is very likely A. gracilis. The larger ones are probably A. gracilis. The thick-stalked one i the last set of photos... Tylopilus species. Did you taste the thick-stalked one? 

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