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Amblystegiaceae

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Thrinaxodon

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May 17, 2013, 8:46:09 AM5/17/13
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The Amblystegiaceae are a clade of mosses primarily found within damp
habitats. As currently circumscribed, the Amblystegiaceae are not yet
supported by any morphological synapomorphies; it has only been
resolved by molecular analysis combining both chloroplast and nuclear
loci (Vanderpoorten et al. 2002).

References

[VH02] Vanderpoorten, A., L. Heden�s, C. J. Cox & A. J. Shaw. 2002.
Phylogeny and morphological evolution of the Amblystegiaceae
(Bryopsida). Molecular Phylogenetics and Evolution 23 (1): 1-21.

John Harshman

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May 17, 2013, 9:06:40 AM5/17/13
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On 5/17/13 5:46 AM, Thrinaxodon wrote:
> The Amblystegiaceae are a clade of mosses primarily found within damp
> habitats. As currently circumscribed, the Amblystegiaceae are not yet
> supported by any morphological synapomorphies; it has only been
> resolved by molecular analysis combining both chloroplast and nuclear
> loci (Vanderpoorten et al. 2002).
>
> References
>
> [VH02] Vanderpoorten, A., L. Heden�s, C. J. Cox& A. J. Shaw. 2002.
> Phylogeny and morphological evolution of the Amblystegiaceae
> (Bryopsida). Molecular Phylogenetics and Evolution 23 (1): 1-21.
>
Is there a point?

Burkhard

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May 17, 2013, 9:25:45 AM5/17/13
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6, and that is not even counting the two from the colon, or the ones
on the "i"s.

chris thompson

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May 17, 2013, 9:27:43 AM5/17/13
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Perhaps it's that these mosses are found primarily, not exclusively,
in damp habitats. Are they sometimes found in desert habitats?

Chris

Richard Norman

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May 17, 2013, 9:30:58 AM5/17/13
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At least he didn't demand that we discuss it.

Richard Norman

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May 17, 2013, 10:55:16 AM5/17/13
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Mosses are common in the many deserts.

There are periodic downbursts which completely soak the soil which has
limited capacity to absorb it. The resulting standing water or
extended regions of dampness allow a moss plant which seems totally
dessicated to revive and run through a reproductive cycle and produce
spores which can then withstand prolonged drought.

See, for example

http://geodermatophilia.blogspot.com/2012/08/why-mosses-can-grow-in-desert-and-why.html


Bob Casanova

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May 17, 2013, 1:30:31 PM5/17/13
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On Fri, 17 May 2013 05:46:09 -0700 (PDT), the following
appeared in talk.origins, posted by Thrinaxodon
<biol...@gmail.com>:
Ummm...OK. So?
--

Bob C.

"The most exciting phrase to hear in science,
the one that heralds new discoveries, is not
'Eureka!' but 'That's funny...'"

- Isaac Asimov

Robert Carnegie

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May 17, 2013, 2:34:04 PM5/17/13
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Yes. The sound of it is something quite atrocious.

chris thompson

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May 17, 2013, 3:16:52 PM5/17/13
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> http://geodermatophilia.blogspot.com/2012/08/why-mosses-can-grow-in-d...

Thanks for this. I spent a lot more time west of the Cascades in
Oregon than east. I am a lot more conversant with damp places (take
that however you like) than dry ones. I didn't have much idea that
mosses could be found in sere environments.

Life will spread, won't it?

Chris

Richard Norman

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May 17, 2013, 4:11:50 PM5/17/13
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My intro biology lectures on mosses took a dramatic turn when I saw
firsthand all that moss in the Arizona desert. We had always used the
"resurrection plant', Selaginella, in lab to illustrate how a
completely dried up scrap could rejuvenate in water in just a few
hours but that was a close relative of the club moss, not a true moss,
and a completely different plant division (phylum).

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