mountain lichen
Dimelaena thysanota
Description 5
Life habit: lichenized; Thallus: thick to thin and strongly radiate-plicate at margin, areolate in center; prothallus: absent; areoles: plane to slightly convex, 0.4-0.8 mm wide; surface: dark brown, dull; Apothecia: infrequent, cryptolecanorine becoming lecanorine and adnate or sessile, usually one per areole, 0.2-0.5 mm in diam.; disc: black, dull, persistently plane; epihymenium: brown; hymenium: hyaline, I+ blue; paraphyses: simple or weakly branched; hypothecium: hyaline; asci: cylindrical, 8-spored; ascospores: brown, 1-septate, 9-13 x 5.5-7.5 µm; Pycnidia: immersed, obpyriform, several per areole; conidia: hyaline, simple, bacilliform, 5-6 x 1 µm; Spot tests: K-, C-, KC-, P-; Secondary metabolites: sphaerophorin, subsphaeric acid, ±gyrophoric acid (minor).; Substrate and ecology: on acidic rocks at high altitudes; World distribution: western North America, from California to southern British Columbia; Sonoran distribution: southern California to Baja California, Arizona and Sonora, from 1000-3000 m.; Notes: Dimelaena thysanota is characterized by the very dark thallus, its hyaline hypothecium and its chemistry.
Fuentes y créditos
- (c) Smithsonian Institution, National Museum of Natural History, Department of Botany, algunos derechos reservados (CC BY-NC-SA), https://collections.nmnh.si.edu/services/media.php?env=botany&irn=10531591
- (c) Jason Hollinger, algunos derechos reservados (CC BY-SA), https://images.mushroomobserver.org/640/289587.jpg
- (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=10531590
- (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=10531592
- (c) Lichen Unlimited: Arizona State University, Tempe., algunos derechos reservados (CC BY-NC-SA), http://eol.org/data_objects/10548578
