Observation 51582: Parmotrema perlatum (Hudson) M. Choisy

When: 2010-08-13

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

Who: zaca

No specimen available

The macroscopic characters, such as: thallus grey-green, large lobes with soredia at the center and at the margins, undulating margins, points to the genus Parmotrema. To arrive at the species, I had based on the chemical reactions, which are illustrated in the last photo attached. According to the first reference P. perlatum reacts as follows: “Medulla and soralia: K+ orange-yellow, KC+ orange”. The second reference indicates “upper cortex K+ yellow, C-, KC-, P-; medulla K+ yellow turning orange, C-, KC-”. The reactions observed match those given in the second reference and, therefore, I gave the name accordingly: Parmotrema perlatum (= P. chinense).


Underside and chemical reactions

Proposed Names

62% (2)
Eye3 Eyes3
Used references:
www.irishlichens.ie;symbiota.org/nalichens/ Royale National Park
Based on chemical features: See last photo attached

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2010-08-29 17:56:58 EDT (-0400)
Last modified: 2010-09-04 17:36:06 EDT (-0400)
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