|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||5.42||1||(jason)|
sum(score * weight) /
(total weight + 1)
… you were able to gave a correct interpretation to the chemistry, which I forgott to mention.
Thanks, Jason, for your comment.
According to Brodo et al in Lichens of North America, D. scruposus has atranorin (K+y) and lecanoric acid (C+r and KC+r), “often with diploschisteic acid” (K+y turning red/violet). It is the species which grows directly on rock. Two other common ones, D. diacapsis and D. muscorum, grow on sandy soil and soil/moss, respectively. All three have K+y or K+y to r/v, C+r, KC+r reactions. There are several other species (and I see several on the Esslinger checklist for North America) but I know nothing about them. I suspect these three are the common showy ones most people notice.
Created: 2011-04-12 19:28:07 EDT (-0400)
Last modified: 2011-04-13 17:23:51 EDT (-0400)
Viewed: 50 times, last viewed: 2017-06-09 09:48:45 EDT (-0400)