The species forms a thin, crusty growth on clay soils in tropical rainforests, where it lives in symbiosis with microscopic green algae.

While it superficially resembles Multiclavula mucida, another white basidiolichen species found in the same regions, S. leucodontius can be distinguished by its preference for growing on soil rather than rotting wood.

These structures are typically 10–20 millimetres tall (though can range from 6–25 mm) and are shaped like small clubs or spindles, being wider at the base and tapering towards the tip.

Specific locations include the Andean-Amazon Piedmont region of Colombia (in the departments of Caquetá and Putumayo), areas near Pico de Orizaba in Mexico, and sustainable forest reserves in Brazil's Amazon rainforest.

Unlike some related species which are known only from single locations, S. leucodontius has adapted to grow across a broad geographical area while maintaining specific habitat preferences for soil type and forest conditions.