Observation 65455: Diploschistes scruposus (Schreber) Norman
When: 2011-04-03
Collection location: Sintra, Portugal [Click for map]
Who: zaca
No herbarium specimen

Notes: Found in the same habitat as the one in MO54106 and clearly younger specimens. However, the chemical reactions are different.


On the top left: C reation (left), K reaction (right); On the bottom left: C reaction-continuation (left); KC reaction (right)
2nd specimen
2nd specimen: close up

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Fortunately …
By: zaca
2011-04-12 20:00:24 EDT (-0400)

… you were able to gave a correct interpretation to the chemistry, which I forgott to mention.
Thanks, Jason, for your comment.

By: Jason Hollinger (jason)
2011-04-12 19:48:03 EDT (-0400)

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: 49 times, last viewed: 2016-10-23 20:22:22 EDT (-0400)
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