Nash, T.H., Ryan, B.D., Gries, C., Bungartz, F., (eds.) 2007. Lichen Flora of the Greater Sonoran Desert Region. Vol 3.

Thallus: absent or very thin, indistinct surface: pale ash gray algal layer: with numerous algae especially under the apothecia, 10-15 µm in diam. Apothecia: pale ochraceous yellow to deep orange, 0.1-0.5 mm in diam., sessile, convex, scattered, brittle true exciple: red-orange to brown-yellow, 10-20 µm thick epihymenium: densely granular hymenium: pale red-orange to red-yellow, (60-)75-85(-125) µm tall, the upper 15-30 µm densely granular; granules: minute, golden yellow or ochre, K+ dissolving; paraphyses: anastomosed, hardly visible in water but clearly visible in K, below 1-1.5 µm wide, apices 3-3.5 µm wide subhymenium: +ochre-colored, pale beneath , 50-150 µm thick asci: swollen, clavate or oval, 55-60 x (15-)20-25 µm, with an upper wall 2.5-3.5 µm wide,100-200-spored ascospores: hyaline, simple, globose, (3-)4-4.5 µm in diam. Pycnidia: unknown Spot tests: all negative Secondary metabolites: none detected. Substrate and ecology: growing over mosses or on bark, especially on Populus tremuloides in western North America World distribution: Europe and North America Sonoran distribution: Arizona at 2750 m (and reported in California north of study area but not verified). Notes: Strangospora ochrophora looks somewhat like a Gyalecta species. It has scattered apothecia that are easily overlooked. They are sometimes confused with small tufts of free-living Trentepohlia, which are similar in color and texture.