When: 2011-08-02

Collection location: Sintra, Portugal [Click for map]

Who: zaca

No specimen available


Chemical reactions.

Proposed Names

29% (1)
Recognized by sight
58% (1)
Recognized by sight

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= Observer’s choice
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Add Comment
Good option!
By: zaca
2011-09-02 06:22:25 CDT (-0500)
If only we knew what the “official” group name was…
By: Jason Hollinger (jason)
2011-09-01 20:42:38 CDT (-0500)

Maybe we should call it the “Parmotrema robustum group”? That’s a whole lot better than just calling it Parmotrema, or at least so it seems to me. Sort of like calling all the granular-sorediate Cladonia “C. chlorophaea group”. Everyone uses that name when they don’t have time or access to do TLC to determine the exact species. Very useful. There’s got to be an equivalent group name for this set of robustum-like Parmotrema (moderately-sized, ruffly, gray, ciliate or not, marginal soralia, KC+ pink).

Having “so many” possibilities …
By: zaca
2011-09-01 19:13:19 CDT (-0500)

of classification and no possibility to conduct further tests, it seems to me there is no other possibility than to leave it just with the genus name.

Could be…
By: Jason Hollinger (jason)
2011-09-01 15:05:05 CDT (-0500)

I know nothing of P. robustum outside what I can glean from the Sipman key. If you’re using that key, it’s worth noting that cilia are notoriously ambiguous in this group, as is the presence of usnic acid (unless you have access to TLC). This means, I suppose, that P. robustum, P. dilatatum, P. gardneri, and P. dominicanum are all possibilities. (Also note that without the P test alectoronic and protocetraric are identical: both K~ yellowish C- KC+ pink/rose. The former is P-, the latter P+ red. But I don’t think any of the alectoronic species are promising in this case, personally.)

I think …
By: zaca
2011-09-01 14:16:47 CDT (-0500)

that the better name for these specimens is Parmotrema robustum, taken the geography in consideration and the features of this species (see Flechtenbilder and azoresbioportal).

By: Jason Hollinger (jason)
2011-09-01 13:19:01 CDT (-0500)

Need TLC to distinguish these two species, but I’d be pretty confident of the group. Wish there were a name to apply to it. (Same with other observation, I’d say.)