Observation 92935: Caloplaca crenularia (With.) J.R. Laundon
When: 2012-04-06
Who: zaca
No herbarium specimen

Notes: Thallus unconfined, not lobed, areolate but somewhat granular to powdery, light-colored gray, with glimpses of pink/violet. Apothecia reddish brown with margins lighter in color, reacting K + red, some with a pruina on it. Fragments of the thallus arround apothecia mainly in the bottom part.
Spores typical of the genus Caloplaca, with the following average dimensions: Me = 9.13 × 8.1 mm; Qe = 1.7 (N = 27) and large isthmus (> 5µm).
Although the values for the length of the spores are somewhat lower than those of observation 91630 believe that this is the same species.
To emphasize the similarity of this specimen with the one presented in reference “THM”, in the case that a specimen collected a century and a half ago (it works!).


K+red on apothecia and detail of apothecia showing the adherent fragments of thallus.

Proposed Names

58% (1)
Eye3 Eyes3
Used references: P.L. Nimis – Chiavi analitiche del genere Caloplaca in Italia, Not. Soc. Lich. Ital., 5: 9-28; THM.
Based on microscopic features
Based on chemical features

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2012-04-18 13:11:13 PDT (-0700)
Last modified: 2012-04-18 13:11:14 PDT (-0700)
Viewed: 17 times, last viewed: 2017-06-12 20:02:49 PDT (-0700)
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