Observation 59728: Lichen P. Micheli
When: 2010-11-24
No herbarium specimen

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My personal take on this…
By: Jason Hollinger (jason)
2010-11-26 07:15:53 PST (-0800)

…for whatever it’s worth. And it’s important to make it clear that it’s not my intention to discourage here at all.

By posting this lichen I think you probably learned something. And probably posting a few more would also help you understand the range of macroscopic variation. Indeed, one or two might even be distinctive enough to id at a glance, e.g., Porpidia albocaerulescens or the rusty Porpidia, for example — they both have the same black apothecia but are easy to ID for other reasons (…which you would probably notice, too, though!)

But once I’ve determined that I can’t go anywhere with 99% of my “lecideine” crusts, there’s just no point posting them until I take the time to do chemistry and microscopy on them. So I certainly understand why you haven’t posted dozens of look-alikes. Until you have access to microscope, there’s just nothing anyone in the world can do with them; as much as anything it’s a waste of your time!

That is the problem…
By: Alok Mahendroo (alok)
2010-11-25 22:51:55 PST (-0800)

A lot of observations are not posted… for fear of duplicity with the existing observations I have made and since I do not know how to differentiate between similar species… :(( Never mind.. You’re right I have to learn to identify the genus first..

Could be Lecidea
By: Jason Hollinger (jason)
2010-11-25 15:09:21 PST (-0800)

But there are several genera (not necessarily even related) that have thick white thallus and black apothecia with black rims. (Both Rhizocarpon and Porpidia can do this, as do some Bacidia, and several others.)

Created: 2010-11-25 09:26:18 PST (-0800)
Last modified: 2010-11-25 09:26:21 PST (-0800)
Viewed: 48 times, last viewed: 2016-10-24 23:12:46 PDT (-0700)
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