Lichen Placopsis gelida
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- ralfwagner
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Lichen Placopsis gelida
Hello,
this lichen was found by my wife during her Iceland holiday. Location was near Selfoss, substrate was lava.
Placopsis gelida is a crustose lichen, characterized by pale orange cephalodia in the center of the thallus. Cephalodia contain a second photobiont, in this case the cyanobacterium Stigonema. The other photobiont, situated in the lobes, is a coccoid green algae.
Closeup thallus:
Section cephalodium:
Section lobe, LCB stain:
Section cephalodium, darkfield:
Section cephalodium, polarized light:
this lichen was found by my wife during her Iceland holiday. Location was near Selfoss, substrate was lava.
Placopsis gelida is a crustose lichen, characterized by pale orange cephalodia in the center of the thallus. Cephalodia contain a second photobiont, in this case the cyanobacterium Stigonema. The other photobiont, situated in the lobes, is a coccoid green algae.
Closeup thallus:
Section cephalodium:
Section lobe, LCB stain:
Section cephalodium, darkfield:
Section cephalodium, polarized light:
Last edited by ralfwagner on Wed Sep 26, 2018 10:46 am, edited 1 time in total.
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Ralf
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Ralf
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- ralfwagner
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Hello and thanks @all!
Lou, I was using a scalpell. It is popssible cut off small pieces that are suitable for a section, aprox. 2 or 3 mm in diameter.
Lou, I was using a scalpell. It is popssible cut off small pieces that are suitable for a section, aprox. 2 or 3 mm in diameter.
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Ralf
http://www.lichenes.de
http://www.dr-ralf-wagner.de
http://www.youtube.com/user/drralfwagner
Ralf
http://www.lichenes.de
http://www.dr-ralf-wagner.de
http://www.youtube.com/user/drralfwagner
- ralfwagner
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Thank you, Walter.
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Ralf
http://www.lichenes.de
http://www.dr-ralf-wagner.de
http://www.youtube.com/user/drralfwagner
Ralf
http://www.lichenes.de
http://www.dr-ralf-wagner.de
http://www.youtube.com/user/drralfwagner
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- ralfwagner
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Thank you, smokedaddy.
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Ralf
http://www.lichenes.de
http://www.dr-ralf-wagner.de
http://www.youtube.com/user/drralfwagner
Ralf
http://www.lichenes.de
http://www.dr-ralf-wagner.de
http://www.youtube.com/user/drralfwagner
- ralfwagner
- Posts: 441
- Joined: Sat Aug 05, 2006 8:34 am
- Location: Germany, Duesseldorf
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Thank you for your kind comments, Chris and Brian.
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Ralf
http://www.lichenes.de
http://www.dr-ralf-wagner.de
http://www.youtube.com/user/drralfwagner
Ralf
http://www.lichenes.de
http://www.dr-ralf-wagner.de
http://www.youtube.com/user/drralfwagner
Interesting photos and inspiring!
Best regards
Jörgen Hellberg
Best regards
Jörgen Hellberg
Jörgen Hellberg, my webbsite www.hellberg.photo
- ralfwagner
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- Location: Germany, Duesseldorf
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Thank you, Jörgen.
----------------------
Ralf
http://www.lichenes.de
http://www.dr-ralf-wagner.de
http://www.youtube.com/user/drralfwagner
Ralf
http://www.lichenes.de
http://www.dr-ralf-wagner.de
http://www.youtube.com/user/drralfwagner