Nash, T.H., Ryan, B.D., Gries, C., Bungartz, F., (eds.) 2004. Lichen Flora of the Greater Sonoran Desert Region. Vol 2.
Hyphal strands: superficial, black, scattered or loosely aggregated; strands: plurihyphal (stromatic), simple or with few ramifications, convex, about 200-500 µm long and 8-20 µm thick Ascomata: superficial, black, scattered, elongate, recognizable as intercalary thickenings of hyphal strands, 50-200 µm long and 30-60 µm wide internal structure: wall of the external cells: dark brown, with a granular pigment, hyaline in the internal ones; cells: 4-6 µm in diam. centrum: I-, K/I- asci: subglobose or broadly ovate, 20-25 x 15-18 µm, 8-spored ascospores: hyaline but becoming brown, 1-septate, rarely 2-septate, broadly obovate, slightly constricted at the septum, halonate when young, 9-13 x 6-8.5 µm; wall: with a granular surface at maturity. Hosts: on the thallus and apothecia of Aspicilia and Lobothallia spp., having a slightly adverse effect on the host especially when growing on their apothecia World distribution: Africa, Asia, Europe, North America, and Australia Sonoran distribution: Arizona, southern California, and Baja California. Notes: Lichenostigma elongata was the first described species of the subgenus Lichenogramma. The vegetative strands are simple or with few ramifications, plurihyphal, not distinctly radiating, and the ascomata are elongate.