|User’s votes are weighted by their contribution to the site (log10 contribution). In addition, the user who created the observation gets an extra vote.|
|I’d Call It That||3.0||6.00||1||(Andrew)|
sum(score * weight) /
(total weight + 1)
I have many photos of this species, and most of the time they don’t have wide margin because they’re being encroached upon by competitors. On the other hand, those free of competition seem to develop this wide margin. But none of them have such a dramatic color difference: usually thallus is duller, or apothecia are grayer (or both). This one is like a newspaper print. And I don’t know anything about Graphis intricata either, except it’s supposed to come up from south up the Mississippi valley all the way to Wisconsin. I couldn’t find a photo of a complete thallus anywhere.
There are few other choices for species of Graphis that far north (unless it’s this G. intricata, I don’t know anything about it except that it seems to be very rare in Wisconsin). Is it just that these specimens aren’t competing with anything else, so we can see the full growing margin before it initiates apothecia production?
From their brethren of the same species, by having this wide off-white rim of sterile thallus (prothallus?)
Created: 2012-09-09 15:34:38 PDT (-0700)
Last modified: 2012-09-09 15:37:27 PDT (-0700)
Viewed: 31 times, last viewed: 2016-05-12 08:33:02 PDT (-0700)