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|I’d Call It That||3.0||6.42||1||(jason)|
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You are right. Slovenia and particularly its south and west parts, including Julian Alps are almost solely limestone, dolomite and similar. Igneous and metamorphic rock islands are small and in the north eastern part of the country (Pohorje mountains and Smrekovec ridge). So, I hike in rather basic conditions. Yet, in Mt. Mangart mountain group we have some patches of acid rock (with very interesting higher plants, which can be found only there in Slovenia). May be there…..?
Come to think of it, I don’t remember seeing any Peltigera venosa (normally an abundant species here) under the limestone cliff where I was finding Solorina saccata (a strictly calcareous species). While I’ve read that S. crocea can handle both base and acid, it seems that P. venosa is intolerant of very basic conditions, and maybe S. crocea, likewise, is at least less frequent (relative to other Solorina) in such places. It is rare that any lichen or plant can handle both extremes. Judging by the observations you have posted, you clearly spend most of your time in highly basic habitats. (Explaining why you’ve found so much cool stuff I’ve never seen!!)
So here’s a theory cum recommendation: are there any large basalt or other igneous outcrops nearby? I’ll bet you’ll find a number of things you’ve been looking for in such a place. (Sandstone can go either way or be entirely devoid of lichens depending on composition, hardness, etc. Something to steer clear of! Haha.)
Thanks for instructions Jason. May be this year I will have more luck?
It is funny that there are many Solorina saccata and different Peltigeras here around, but I have never seen P.venosa (it shouldn’t be difficult to recognize it). May be this explains why Solorina crocea is also hiding.
Most Solorina prefer calcareous soil, but apparently this species isn’t particular. This probably isn’t new for you, but my sources say:
Lichens of N. America — “on soil, usually in moist spots under late snow patches or seepage areas in arctic or alpine sites”
Ways of Enlichenment — “frequent on moist soil in areas of persistent snow at upper forested and alpine elevations; also arctic”
It was an exciting find for me, too! I was entirely unprepared for just how orange it really is. It was “hiding” among a bunch of other Peltigera. In particular, the few Solorina I’ve seen have always looked like “just another Peltigera venosa”. Do you know a medium- to high-elevation location where P. venosa is common? That might be a good place to take a closer look.
Beautiful! I am trying to find it (mainly because it is nearly impossible to confuse it with other lichens) at about 2.000 m (at lat 45 deg N). But so far in vain.
Created: 2009-06-04 15:37:54 PDT (-0700)
Last modified: 2009-06-04 15:37:54 PDT (-0700)
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