Notes: Since I was labeled a Lichen hater on MushroomTalk after my outburst here
I figured I would post a lichen as a peace offer.
(I still want them off Mushroom Observer…)
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Lichen biogeography is a fascination subject. I continue to be amazed at lichen ranges with global components. For instance, the rarest lichen in the Pacific Northwest, Acroscyphus sphaerophoroides, is also known from southern Mexico, China, Japan, Peru, Patagonia, and South Africa (Joneson and Glew, 2003). Compare this with bird distributions. There are about 3000 species of birds in South America and about 1500 species of birds in Africa south of the Sahara, but the two regions have only about 20 or 30 species in common, principally a few ducks.
This paper is a challenge to read, but contains a fascinating discussion of lichen distributions, comparing them to Takhtajan’s famous 35 global floristic regions:
Tassilo Feuerer and David L. Hawksworth, 2007, Biodiversity of lichens, including a world-wide analysis of checklist data based on Takhtajan’s floristic regions, Biodiverity and Conservation, Volume 16, Number 1, pp.85-98, January, 2007; DOI 10.1007/s10531-006-9142-6
These things don’t behave at all like lichens. I suspect strongly that they don’t require the photobiont to establish, probably don’t even have a prethallus. This makes them totally different beasts from an ecological or biogeographic point of view. If they do have some temporary saprophytic stage, then one would expect Australia’s completely different plant flora to support subtly different (chemically at least, if not outwardly) species.
In general, yes, lichens really get around. All regions of the globe have acidic, basic, nutrient-rich, nutrient-poor, dry, wet, etc. microhabitats. So there is less difference between Europe and North America, say, for lichens than for mushrooms. Maybe. But then we have things like Irene’s beautiful Vulpicida juniperinus — clearly behaving the same as North America’s V. canadensis, but also clearly different. Remember, that we get to see the whole lichen, not just the fruiting bodies; most of your mushrooms are tantalizingly hidden.
of Lichenomphalia chromacea are tough to find on the web…
Richard Robinson’s FotM is the best I found;
And a couple pictures of a older one on Shroomery…
And this one which I don’t think is chromacea
Maybe some of the lichen people can chime in on this… Are lichens more likely to be the same species world wide? (compared to mushrooms, which use the same names but are clearly different) Or are the lichens going by the same name in NZ a different species then the ones in Europe/North America? (and just haven’t been split yet)
is what I’d expect it to be. Not that I can tell the difference between these yellow species, only because alpina is european, and chromacea is the australian “Yellow Navel”..
I have also seen L. chromacea in AU which is BRIGHT yellow and a another AU Lichenomphalia which was orange.
this is what I call a beautiful lichen!
L. alpina is bright yellow, umbellifera is more like cream coloured..
macroscopically it’s darker in color, more orange fading to creamy-yellow and these seem to have really decurrent gills, the L. umbellifera that I’ve seen don’t have gills like this.
Nothing is sun baked here at the moment but when I do find a a “sun baked crust” I’ll post it just for you…
Created: 2010-04-29 11:10:10 CEST (+0200)
Last modified: 2016-06-18 04:41:33 CEST (+0200)
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