eggyolk lichen
Candelariella subdeflexa
Description 4
Thallus: squamulose, sometimes poorly developed and then granular to indistinct; squamules: up to 0.5-0.6 broad and 0.3-0.8 long, irregularly incised to lobate, appressed to raised from the substrate, scattered to crowded or imbricate; surface: gray, somewhat shiny; cortex: upper part 4-15 µm thick and composed of dead compressed hyphae, lower part paraplechtenchymatous, 10-20 µm thick; Apothecia: usually abundant, biatorine, 0.3-0.6 mm wide, but often several apothecia grow into each other forming larger aggregates; exciple: not visible from the outside,; disc: pale yellow to yellow, round but becoming irregularily in outline, somewhat convex; epihymenium: yellow-brown; hymenium: hyaline, 50-60 µm tall; paraphyses: simple, cylindrical or sligthly tapering, tips to 2.5 µm; hypothecium: hyaline; asci: clavate, 8-spored; ascospores: hyaline, simple to 1-septate, narrowly ellipsoid to ovoid, 9.5-14 x 4-5 µm; Pycnidia: normally lacking, instead the lower surface of the squamules are covered by conidiophores; nidia: hyaline, ±globose, 4.5-6 µm wide; Spot tests: disc K+ reddish, KC-, C-; Secondary metabolites: calycin, pulvinic acid, pulvinic dilactone and vulpinic acid.; Substrate and ecology: mostly on the bark of broad-leafed trees, sometimes on wood; World distribution: North America, southern and central Europe, North Africa, and New Zealand; Sonoran distribution: found twice in Arizona, on oak along a river and on juniper in a pinyon-juniper stand.; Notes: This peculiar species is rare in the Sonoran region. Candelariella subdeflexa is characterized by its biatorine apothecia and its gray, squamulose thallus which may, however, be poorly developed. It is not likely to be identified as a Candelariella when sterile.
Fuentes y créditos
- (c) National Museum of Natural History Collections, algunos derechos reservados (CC BY-NC-SA), https://collections.nmnh.si.edu/services/media.php?env=botany&irn=10530594
- (c) National Museum of Natural History Collections, algunos derechos reservados (CC BY-NC-SA), https://collections.nmnh.si.edu/services/media.php?env=botany&irn=10530595
- (c) National Museum of Natural History Collections, algunos derechos reservados (CC BY-NC-SA), https://collections.nmnh.si.edu/services/media.php?env=botany&irn=10530596
- (c) Lichen Unlimited: Arizona State University, Tempe., algunos derechos reservados (CC BY-NC-SA), http://eol.org/data_objects/10548252
