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|I’d Call It That||3.0||0.00||0|
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Yes, I see these things from time to time, too, the ones that are absolutely impossible to clean off. They’re always in the driest habitats. I think P. ponojensis with its relatively discrete rhizines can’t do this; only the woolly mat of rhizines of P. rufescens can cling so tenaciously to the soil and debris. I think we should go with that name despite the apparently white underside. I think P. ponojensis shouldn’t even have dark rhizines, by the way. But these two species kick my butt still…
I feel like forensic expert. It seems thallus keeps its white color even towards the center. Rhizines become darker, though. Rhizines are of two types: some are longer, cord-like, and some are shorter tufts. They don’t seem to merge into one another, for the most part.
It’s devilishly hard to separate thallus from substrate, so I can’t see if the veins are darker towards the middle. And looking at photos in Brodo, there isn’t that much difference anyway. Rhizines are white tufts, pretty discreet – but again on the lobe tips: I can’t tell what’s deeper inwards at this point.
Created: 2012-10-28 19:53:58 CDT (-0400)
Last modified: 2015-12-20 21:46:13 CST (-0500)
Viewed: 41 times, last viewed: 2015-12-21 02:04:38 CST (-0500)