Thallus: crustose, areolate; prothallus: very inconspicuous; areoles: contiguous or dispersed, flat to slightly convex, appressed, +round to irregular in outline, 0.3-1 mm in diam., 0.2-0.4 mm thick; surface: pale whitish ochre to very pale brown or (olive-)gray, esorediate; medulla: white, I-; Apothecia: black, with a slightly constricted base, 0.5-0.7(-1.4) mm in diam.; disc: black, flat to moderately convex, dull, epruinose or sometimes weakly pruinose; margin: black, usually persistent for a long time, eventually vanishing, thin, dull to shiny, rarely dark brown at the side towards the thallus; exciple: with a greenish black or brownish black, epihymenium-like rim, unpigmented inside but ochre-opaque due to inspersion of crystalline masses (gyrophoric acid); epihymenium: pale to dark gray-green, c. 10 µm thick; hymenium: hyaline, (50-)65-75(-85) µm tall, I+ blue; paraphyses: simple, sometimes branched and anastomosing; subhymenium: hyaline, (15-)25-30(-40) µm thick; hypothecium: dark brown to almost black; asci: clavate, 50-70 x 10-16 µm, 8-spored; ascospores: hyaline, simple, ellipsoid, (6-)914(-16) x (4.5-)5-7(-8) µm, length-width-index: 1.9-2.4; Pycnidia: immersed; conidia: cylindrical, 7-12 x c. 1 µm; Spot tests: cortex and medulla K-, C+ red, KC+ red, P-; Secondary metabolites: gyrophoric acid syndrome.; Substrate and ecology: on acid rocks or agglutinated sandy soil; World distribution: arid and semi-arid areas in Australia (other reports in need of verification); Sonoran distribution: rarely in Baja California.; Notes: This subgenus comprises species of temperate and cool, mostly humid climates with relatively long conidia and (in freshly collected material too) I+ blue hymenium (see Rambold 1989). The name Rehmiopsis means "similar to Rehmia" [Rehmia Kremp. = Rhizocarpon] and Möller-Argoviensis described Patellaria heterodoxa as similar to Rehmia coeruleoalba in gross morphology]. Lecidea ochroleuca is a member of the difficult Lecidea fuscoatra complex with a still insufficiently understood circumscription. In Australia Rambold (1989) noted that it colonizes mainly sandy soil and frequently occurs on termite mounds. The epithet "ochroleucus" (Greek: ochroleukos = yellowish-white) refers to the thallus color.
No one has provided updates yet.