Peltigera venosa

ralfwagner · Post by **ralfwagner** » Fri Dec 11, 2009 1:31 pm

Hello,

another Peltigera. This one has 2 photobionts.
a) green algae in the lobes
b) cyanobacteria in cephalodia situated on or near the veins on the lower surface

- Habitusfoto. Thallus green, ~ 2 cm diameter. Lobes single, 0,5 - 2 cm.

- Lower surface. Veins with tomentose surface and scattered black cephalodia.

- Lobe cross section. Beneath the paraplektenchymatic upper cortex follows the layer with the symbiontic green algae (Coccomyxa). Under this layer we see a layer of loose ordered mycelium. There is no lower cortex. The cephalodia contain the second photbiont, Nostoc spec. .

- Closeup cephalodium with paraplektenchymactic cortex

- Cross section apothecium. Staining with Lactophenol-Methylblue-Acidfuchsin.

- Ascus Peltigera type, 55 x 11 µm, apex with K/J+ blue annulus. Spores 3 septated, 8 per ascus, 23 x 5 µm. Staining with Lugol.

ChrisR · Post by **ChrisR** » Fri Dec 11, 2009 1:58 pm

Stunning photos, but I did a search on "paraplektenchymatic". All the hits had your name on them Ralf!

gpmatthews · Post by **gpmatthews** » Sat Dec 12, 2009 1:39 am

Try "paraplectenchymatic " - I think the "k" is used in the Germanic vesrion and a "c" in the English version (my 10 year old daughter looked at this word, and just said "too long").

Wonderful photos, Ralf.

Planapo · Post by **Planapo** » Sat Dec 12, 2009 4:10 am

Another one of your beautiful and comprehensive microscopic treatises on a lichen.
Much appreciated and enjoyed! Thanks for sharing with us, Ralf!

--Betty

rjlittlefield · Post by **rjlittlefield** » Sat Dec 12, 2009 9:16 am

gpmatthews wrote:Try "paraplectenchymatic" - I think the "k" is used in the Germanic vesrion and a "c" in the English version (my 10 year old daughter looked at this word, and just said "too long").

Google Translate get this one right: the one word paraplektenchymatic in German translates to the one word paraplectenchymatic in English.

Google search on paraplectenchymatic then returns lots of hits. (It even finds Graham's posting just above here. Apparently Google has decided that photomacrography.net is worth indexing frequently!).

But define: paraplectenchymatic came up dry, and I couldn't find it anywhere else either.

What does the word mean?

Photos, yes, excellent photos. I especially like the last ones of the asci. DIC or just oblique illumination?

--Rik

NikonUser · Post by **NikonUser** » Sat Dec 12, 2009 9:59 am

Try searching for plectenchyma; add para (meaning near)

rjlittlefield · Post by **rjlittlefield** » Sat Dec 12, 2009 10:06 am

NikonUser wrote:add para (meaning near)

Would that be "near" in the sense of "adjacent to", or "near" in the sense of "approximately"?

--Rik

ralfwagner · Post by **ralfwagner** » Sat Dec 12, 2009 10:31 am

Hello,

sorry for that confusion with "paraparaplektenchymatic". This word is wrong written, the correct writing is "paraplectenchymatic", just as Graham mentioned.
A paraplectenchyma is a tissue consisting of cell-like hyphae with +/- isodiametric lumina. It must not be confused with a real enchyma of plants, that consists of real cells.

@Rik: no DIC, just oblique illumination.

Tanks @ all for their kind words.

BJ · Post by BJ » Sun Dec 13, 2009 9:03 am

Hi Ralf,

another fantastic series of photos beautifully taken and presented.

The challenge for me today is to see if I can introduce " paraplectenchymatic" -used correctly- into a conversation. We are having mushrooms for dinner tonight - perhaps I can say " interesting texture ..but not I think quite paraplectenchymatic ".. that should keep them quiet !!

Thanks once more!
Brian