Does anybody know which species the lichen on the picture is!

http://www.danbbs.dk/~gro_poul/billedkasse.htm

Poul Evald Hansen

Does anybody know which species the lichen on the picture is!
http://www.danbbs.dk/~gro_poul/billedkasse.htm

Who told you it is a lichen? It looks like a liverwort to me. Liverworts are
related to mosses & have the same reproductive system, but they look like
pieces of green rubber.
Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)

In article , wrote...

Does anybody know which species the lichen on the picture is!
http://www.danbbs.dk/~gro_poul/billedkasse.htm

Who told you it is a lichen? It looks like a liverwort to me. Liverworts are
related to mosses & have the same reproductive system, but they look like
pieces of green rubber.

But lichens can be thalloid and rubbery as well. This one, for
example. It is indeed a lichen, and not a liverwort. [But
superficially it's a very liverwort-like lichen].

It clearly looks to me to be a member of the lichen genus
_Peltigera_. Possibly P. canina?

The pale structures are the characteristic fruiting bodies
of the lichen fungus. These lichens are especially rubbery,
perhaps because they contain the blue-green cyanobacterium
_Nostoc_.

IIRC, the familiar species _Peltigera canina_ or "dog lichen" is
named for its often toothlike fertile bodies at the lobe tips
[these are not always present], but there are other similar
species. [As I recall, early herbalists thought the toothy-looking
lichen ought to be good for treating dog bites and rabies (doctrine
of signatures)...]

http://www.robertthompsonphotography.com/page_77.htm
http://www.nmc.edu/~jmedlin/p_canina.html
http://www.southamptoncameraclub.co....dvanced/62.htm
http://www.nawwal.org/~mrgoff/photoj...8frogpelt.html
http://www.bioimages.org.uk/HTML/P153473.HTM
http://www.bioimages.org.uk/HTML/P163352.HTM
http://www.rook.org/earl/bwca/nature...peltigera.html
http://www-biol.paisley.ac.uk/resear...izontalis.html
http://www-biol.paisley.ac.uk/resear...mbranacea.html
http://www-biol.paisley.ac.uk/resear...ritannica.html
http://www.floraislands.is/latflora.htm

cheers

"mel turner" wrote in message
...
In article ,
wrote...

Does anybody know which species the lichen on the picture is!
http://www.danbbs.dk/~gro_poul/billedkasse.htm

Who told you it is a lichen? It looks like a liverwort to me. Liverworts
are
related to mosses & have the same reproductive system, but they look like
pieces of green rubber.

But lichens can be thalloid and rubbery as well. This one, for
example. It is indeed a lichen, and not a liverwort. [But
superficially it's a very liverwort-like lichen].

It clearly looks to me to be a member of the lichen genus
_Peltigera_. Possibly P. canina?

The pale structures are the characteristic fruiting bodies
of the lichen fungus. These lichens are especially rubbery,
perhaps because they contain the blue-green cyanobacterium
_Nostoc_.

IIRC, the familiar species _Peltigera canina_ or "dog lichen" is
named for its often toothlike fertile bodies at the lobe tips
[these are not always present], but there are other similar
species. [As I recall, early herbalists thought the toothy-looking
lichen ought to be good for treating dog bites and rabies (doctrine
of signatures)...]

http://www.robertthompsonphotography.com/page_77.htm
http://www.nmc.edu/~jmedlin/p_canina.html

http://www.southamptoncameraclub.co....tml-advanced/6
2.htm
http://www.nawwal.org/~mrgoff/photoj...8frogpelt.html
http://www.bioimages.org.uk/HTML/P153473.HTM
http://www.bioimages.org.uk/HTML/P163352.HTM
http://www.rook.org/earl/bwca/nature...peltigera.html

http://www-biol.paisley.ac.uk/resear...tigera_horizon
talis.html

http://www-biol.paisley.ac.uk/resear...tigera_membran
acea.html

http://www-biol.paisley.ac.uk/resear...tigera_britann
ica.html
http://www.floraislands.is/latflora.htm


Many thanks for the answer. After studying the species I now suppose it is
Peltigera didactyla.

Kind regards

Poul Evald Hansen