[3][4] It consists of the single species, Rhaphidicyrtis trichosporella, a bark-dwelling, crustose lichen that forms thin, pale patches on tree bark in humid deciduous woodlands.

This small, inconspicuous lichen is characterised by tiny black reproductive structures scattered across its surface and distinctive microscopic features that set it apart from similar species.

When treated with iodine-based stain after applying potassium hydroxide solution, the gel-like substance within the perithecium turns a deep blue colour, which is a distinctive chemical reaction for this genus.

The pinkish hue of fresh specimens tends to fade in dried herbarium samples, making proper documentation of field characteristics important for identification.

It has been found on various tree species, including alder, beech, and oak, often preferring areas with smooth bark or shallow furrows.

It has been recorded in several European countries, including Finland, where it was first described, as well as the British Isles, Belgium, Germany, Poland, Lithuania, Denmark, and Sweden.

[9] As an epiphyte, R. trichosporella grows on the bark of various deciduous trees, including alder, beech, oak, birch, hornbeam, holly, ash, and hazel.