On very decayed fallen log beside the trail in Oak-Hickory woods.
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to my new Windows 10 which has some sort of inconvenient feature that supposedly gets used to your typing style and “anticipates” what you want to type. In reality it merely causes the user to have to edit more carefully what actually makes it to the page. It’s a frustrating technological advance that I can live without! Aaargh!
spend providing feedback for me and all the other eager-to-learn amateurs on MO. Your detail-oriented approach encourages an ever greater appreciation for the important nuances of mushroom identification. To answer your question: T. hirsute, villosa; and, to a lesser degree, pubescens do force one to attend to the details in order to differentiate these polypores which are all so widely distributed in our local mixed hardwoods forests. They share a season (and we’ve been unusually warm this December — more like October temperatures in the 60’s and 70’s); all produce a white rot; all are hairy to varying degrees; and are similarly colored. So how, you asked, did I differentiate between them when I decided to post this ID.
Here’s my thinking: I first ruled out T. pubescens — a species I have looked for but not yet found, although I have seen and examined others’ “finds”) because it seems much fleshier than villosa or hirsute. The hairs on the cap surface are shorter and finer (more like fine cut velvet) and the concentric zones of color are less distinct, giving the cap what I call a blurred, watercolor affect, often with a whitish margin.
Then to distinguish between T. hirsute and villosa — and please set me straight if my thinking is erroneous here: both are conspiculously hairy but T. hirsute is what I call “ridiculously” hairy=) One can even measure the depth of the hairy cap surface when the speciem is cut to expose a cross-section. Hirsuta seems always to have very stiff, coarse hairs closest to the point of attachment and more adpressed, silkier hairs toward the margin which is often brownish. Additionally, the pores of hirsute are smaller (4-5/mm. in this specimen) with relatively thicker walls; and the pores do not become elongated and toothy looking like those of villosa. Also, I note that the pore surface of hirsute takes on a grayish tinge with age as opposed to yellowing.
I’d be interested to know what field/macro criteria you use to differentiate the three. I’m always eager to expand my skills. THNX again!
Created: 2015-12-14 14:57:27 CST (-0500)
Last modified: 2015-12-14 14:57:34 CST (-0500)
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