• Steinia geophana (Nyl.) Stein
Steinia geophana
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(Map updated: 11 August 2009)

A rather ephemeral crustose lichen of neglected or recently disturbed soils, S. geophana has a thin olive green thallus subgelatinous when moistened composed of a crumbly bundle of goniocysts (like green algal cells). The small, scattered pale to dark brown discs are convex and the spores 16/ascus. Often frequent on former metal-contaminated soils. In Ireland, the species appears under-recorded.

Key characteristics

  • Thallus of goniocysts, olive green, subgelatinous if wet, with brown convex discs
  • No spot test reactions; on abandoned formerly disturbed soils.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Steinia geophana (Nyl.) Stein. [In] LichenIreland. Accessed on 2020-05-26.