Collection location: Sintra, Portugal [Click for map]
The thallus of this specimen clearly points to a Cladonia species. Hovewer, no apothecia is present. Looking in the net for information about sterile species of cladonia I found references to three species: C. apodocarpa, C. caespiticia and C. petrophila. For the later I was not able to find any image. For the other species I found images in Sharnoff Photos and observations in the MO database, MO45175 for C. apodocarpa and MO21295 for C. caespiticia. The squamules of C. apodocarpa are of a different form than those of my specimen, but the squamules of C. caespiticia from the above cited observation are very much like those of my specimen. In Sharnoff Photos a photo of a specimen with podetia can be seen. Thus I think that C. caespiticia is a possiblity for the classification of this one.
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sum(score * weight) /
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I have tried to clarify this matter for this specimen because, on the one hand, it is obviously a healthy and thriving one and, on the other hand, the others of this genus I have found with this size or less had already associated fruiting bodies. But it seems that I can not go much further.
“Cladonia with podetia absent or very small and weakly developed” (Ryan, 1995, unpublished):
1a. P+ yellow or red, K+ red
andereggii, symphycarpa, polycarpoides
1b. P-, K+ deep red (anthraquinones)
robbinsii, incrassata, luteoalba,
sulphurina, bellidiflora, metacorallifera,
coccifera, pleurota, deformis
Your K+ purple reaction would seem to indicate that your squamulous Cladonia contains anthraquinones.
Today I return to the place of the observation, take new photographs and performed the spots tests. The result of this tests seems to rule out C caespiticia. In fact, according to Landemer and Hodkinson the results of the spot tests for that species are: K+ dirty yellow, C-, KC-. In this paper there are two species having purple reactions, namely:
- C. petrophila, Chemotype I: K+ weak yellow, C-, KC+ weak purple;
- C. stipitata: K+ yellow, C-, KC+ weak purple;
but I don’t know if it can be either of them, because in my specimen the purple reaction already appears with K.
Created: 2010-09-30 06:03:00 -05 (-0500)
Last modified: 2010-10-02 16:47:12 -05 (-0500)
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