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Candelariella rosulans (Mull. Arg.) Zahlbr.
Family: Candelariaceae
Candelariella rosulans image
Stephen Sharnoff  
Thallus: bullate to lobate to rosulate to squamulose, sometimes forming rosettes squamules: rounded to lobate, sometimes raised from the substrate; lobes: crenate to incised, up to c. 1 mm long surface: yellow to orange yellow, smooth to coarse cortex: pseudoparenchymatous, 5-15 µm thick Apothecia: common, lecanorine, 0.4-1.2(2.2) mm wide disc: darker yellow than the thallus, flat to somewhat convex margin: thick, entire to crenulate, persistent exciple: thin, not visible from the outside epihymenium: yellow-brown hymenium: hyaline below, 60-70 µm tall; paraphyses: simple or sometimes branched above, cylindrical or swollen apically with up to 5 µm wide tips; hypothecium: hyaline asci: clavate, 8-spored ascospores: hyaline, simple to 1-septate, oblong to narrowly ellipsoid, 11-21 x 5-6.5 µm Pycnidia: common, appear as darker yellow warts on the thallus conidia: hyaline, oblong to ellipsoid, 2.5-3.5 x 1.5 µm Spot tests: K+ reddish, KC-, C- Secondary metabolites: calycin, pulvinic acid, pulvinic dilactone and vulpinic acid. Substrate and ecology: mostly on calcium-free rocks, but sometimes also on more calcium-rich rocks, rarely on wood and tree bases World distribution: western North America Sonoran distribution: on rocks in Arizona, southern California, Baja California, Sonora, and Chihuahua. Notes: Candelariella rosulans is a common species north of the Mexican border. Although variable in appearance, it is normally lobate and sometimes forms rosulate thalli. The spores are usually ±oblong and never have pointed ends. Compared to C. "complanata", it has a thicker, more convex thallus and broader spores. Often it grows together with C. citrina and the color difference between the two species is usually significant.
Candelariella rosulans image
Stephen Sharnoff  
Candelariella rosulans image
Stephen Sharnoff  
Candelariella rosulans image
Stephen Sharnoff  
Candelariella rosulans image
Joselyn Fenstermacher  
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image
Candelariella rosulans image