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And I’ve thrown away the small piece of the lichen I took just to ID the species, since it wasn’t of Herbarium quality, and plenty of records exist from that county of the same species.
It can be anywhere from just yellow staying yellow, to yellow turning bright orange-red. Not sure if it’s due to differences in concentration or the relative mix of closely-related acids. Would be interesting if X. plittii typically gives more red reaction in Great Lakes region than on California coast. What in the world would that mean??
Color is difficult, and really terrible in keys when you have to make a subjective decision, thanks for the info!
I am stumped when forced to describe particular color, for color perception is a relative thing (for me, anyways). As far as lobes go, I mostly use keys in Thomson Lichens of Wisconsin, and it doesn’t have lobes as key factor. The width of lobes is in description of species, and is given as 1-2 mm broad. See my other X.plittii – I have a bunch on MO – to check what kind of lobes they have.
Hi Andrew, is it normal for X. plittii in your neck of the world to have such narrow lobes? I am very much not familiar with the genus or this species other than one observation (for the species) that is not confirmed, observation 203954. Also, the medulla I think should be K+Y turning orange, not red, at least here on the West Coast, but maybe that is consistent throughout its range? Xanthoparmelia mexicana is isidiate with medula turning dark red in this area.
Created: 2015-05-22 16:39:33 PDT (-0700)
Last modified: 2015-05-22 16:43:54 PDT (-0700)
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