Observation 117451: Ramalina Ach.

When: 2012-11-20

Collection location: Cabo Blanco, Santa Cruz, Argentina [Click for map]

-47.2035° -65.738° 2m

Who: nastassja (Nastassja Noell)

No specimen available

Substrate: matamorphic volcanic rock

Aspect: South facing, open walls and crevices. General pattern looks like its growing on seabird guano, and/or distributed by these… :) Do any birds eat Ramalina sp? Maybe make nests? Didn´t look like any of the Ramalina had been munched but if I was a bird I´d just pull off the entire thallus…

Description: curled ends, not as smooth of a thallus as up north, seems sorediated, unless this is some super stressed pseudocyphellae? Limited apothecia. Wide straps: 2-4mm, most of them coming from a basal point. This one sure looks similar to the general form of observation 116995 but is probably more similar to the nearby 117264 which I could not see up close.

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Thanks Zaca :)
By: nastassja (Nastassja Noell)
2012-11-23 06:47:54 PST (-0800)

From the pictures and descriptions I´m gathering on the internet, it sure does look alot like R. polymorpha, I´m also looking at a similarly pseudocyphellate Antartic species R. terebrata super thanks for your input!!!

I’d listen to Zaca on this one
By: Jason Hollinger (jason)
2012-11-20 16:41:04 PST (-0800)

He has a lot of experience with Ramalina like these. But as he says, there could be a different set of species down there that don’t occur in either Portugal or North America. (Although note that the center of diversity of the genus is the Canary Islands, not far from Portugal.)

It looks like …
By: zaca
2012-11-20 15:48:38 PST (-0800)

one of the two: R. polymorpha and R siliquosa. Of course I known nothing about their existence there.

Created: 2012-11-20 15:30:26 PST (-0800)
Last modified: 2012-11-20 15:36:29 PST (-0800)
Viewed: 61 times, last viewed: 2017-06-14 08:39:14 PDT (-0700)
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