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Caloplaca floridana (Tuck.) S. Tucker
Family: Teloschistaceae
[Blastenia floridana (Tuck.) Zahlbr.,  more]
Caloplaca floridana image
Life habit: lichenized Thallus: crustose, continuous, without elongated lobes; prothallus: present, black surface: gray, smooth, without asexual propagules Apothecia: adnate, 0.2-0.4 mm in diam., lecanorine disc: dark brown or black, flat, epruinose margin: persistent, flush or slightly raised; thalline margin present, concolorous with thallus; proper margin visible, concolorous with disc parathecium: elongate to oval cells; exciple below hypothecium irregular hyphae epihymenium: brown or gray, K+ violet, 10%N + violet, cN+ violet hymenium: hyaline, 60-85 µm tall paraphyses: 1-2 tip cells slightly swollen, with few branches; subhymenium hyaline asci: cylindrical, 8-spored ascospores: hyaline, 2 locules, ellipsoid, 11-14 x 5.5-7 µm, isthmus (4-)5.5-7(-8.5) µm, spore end wall thin Pycnidia: not observed Spot tests: apothecial margin K+ violet, 10% N+ violet, cN+ violet, C-; thallus K-, 10%N-, cN- Secondary metabolites: thalloidima green. Substrate and ecology: on bark World distribution: North America Sonoran distribution: northern Sinaloa. Notes: Caloplaca floridana has a thin gray thallus and usually a black prothallus:. The epihymenium is K+ violet in contrast with C. diphasia that has a K+ yellow epihymenium.