Description ⁵

 Life habit: lichenized; Thallus: crustose, areolate, without elongated lobes; prothallus: absent; surface: yellowish orange, smooth, without asexual propagules; Apothecia: adnate, 0.2-0.7 mm in diam., lecanorine; disc: orange, flat, epruinose; margin: persistent, flush; thalline margin absent; proper margin visible, concolorous with disc; parathecium: irregular hyphae, exciple below hypothecium with irregular hyphae; epihymenium: golden, K+ red; hymenium: hyaline, 55-70 µm tall; paraphyses: not swollen or 1-2 tip cells slightly swollen, with some branching or frequently branched; subhymenium hyaline; asci: cylindrical, 8-spored; ascospores: hyaline, 2 locules, ellipsoid, 12.5-15 x 5.5-7 µm, isthmus 3-4 µm, spore end wall thin; Pycnidia: not observed; Spot tests: apothecial margin K+ red; thallus K+ red; Secondary metabolites: unidentified anthraquinones.; Substrate and ecology: on wood or bark; World distribution: southwestern North America; Sonoran distribution: Arizona and Sonora.; Notes: Caloplaca durietzii has an areolate yellow-orange thallus of small convex areoles or verrucae and apothecia with dark orange discs. The original description mentions small verrucae between the apothecia and compares it with C. pyracea. It is uncertain what this species really is at this time and it needs further study. Caloplaca microphyllina is somewhat similar but has soredia. Species 5 has globose isidia and no soredia. 

Sources and Credits

1. (c) Smithsonian Institution, National Museum of Natural History, Department of Botany, some rights reserved (CC BY-NC-SA), https://collections.nmnh.si.edu/services/media.php?env=botany&irn=10530133
2. (c) Sophia Lee, some rights reserved (CC BY-NC-SA), https://collections.nmnh.si.edu/services/media.php?env=botany&irn=10528888
3. (c) National Museum of Natural History Collections, some rights reserved (CC BY-NC-SA), https://collections.nmnh.si.edu/services/media.php?env=botany&irn=10530131
4. (c) National Museum of Natural History Collections, some rights reserved (CC BY-NC-SA), https://collections.nmnh.si.edu/services/media.php?env=botany&irn=10530132
5. (c) Lichen Unlimited: Arizona State University, Tempe., some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/10549286

More Info

• iNat taxon page
• Biodiversity Heritage Library
• BOLD Systems BIN search
• Global Biodiversity Information Facility (GBIF)
• Mushroom Observer
• SEINet Symbiota portals

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(c) Discover Life and original sources, some rights reserved (CC-BY-NC-SA)

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