Observation 47614: Cladonia P. Browne

When: 2010-06-25

Collection location: Parque de Monsanto, Lisboa, Portugal [Click for map]

Who: zaca

No specimen available

Looks like an old mop wire, both as it seems, as in harshness.
The chemical reactions were:
K+green, C+green (after sometime and not so intense as K), KC-.


2nd specimen
Close-up of a small piece

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Add Comment
By: zaca
2010-06-28 22:02:24 CST (+0800)

Thanks, Jason, for the suggestion.
With the purpose of comparing my specimen with one of C. furcata, I took a close-up photograph of a piece of my specimen, which I already upload, and compared with the photograph of C. furcata existing here (Photo gallery > Cladonia > furcata – choose one except the first). It seems to me that they are very similar (despite the different quality of the photographs). Perhaps the main difference is the number of scales (but my specimen begins to get old and this may have influence).

Consider Cladonia furcata, too, then.
By: Jason Hollinger (jason)
2010-06-28 07:49:24 CST (+0800)

C. furcata – grayish (KC-, lacking usnic acid), squamulose, stems 1-2 mm wide, prefers shadier habitats.
C. uncialis – greenish (KC+y, with usnic acid), less squamulose, stems 1-4 mm wide, more open and rocky places.

There is also an odd Cladina-like form of C. mulitformis, but all sources emphasize that it has at least some cups, and its stems are more often slit open lengthwise. I believe it is also KC-. (This species typically has very distinctive sieve-like perforated broad cups.)

Thanks, Jason.
By: zaca
2010-06-28 07:37:25 CST (+0800)

Before your comment I had seen images of a large number of species of Cladonia and had failed to find any similar. The species you mention, C. uncialis, has indeed some similarities with my specimen and I could not find a better classification. I only know that this species is mentioned in records from the neighboring Spain.

By: Jason Hollinger (jason)
2010-06-27 07:39:39 CST (+0800)

It has squamules and it looks like it has a cortex, so that rules out Cladina (which is now included in Cladonia, anyhow). It looks a bit like C. uncialis, but different enough that I’d say you have yet another species we don’t have in N. Amer.

Created: 2010-06-27 01:28:52 CST (+0800)
Last modified: 2010-08-15 02:38:38 CST (+0800)
Viewed: 51 times, last viewed: 2018-07-26 19:59:50 CST (+0800)
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