Rinodina stictica
Photo: Photo: National Museum of Natural History via Wikimedia Commons CC0
Overview
Rinodina stictica is a crustose lichen species that forms thin, grayish to brownish crusts on rock surfaces, characterized by distinctive black apothecia (fruiting bodies) with prominent margins. This slow-growing lichen plays an important ecological role as a pioneer species in rock colonization and contributes to soil formation through gradual weathering processes.
Rinodina stictica, a crustose lichen species, faces severe decline primarily due to air pollution and habitat degradation. This species is particularly sensitive to atmospheric pollutants and changes in air quality, which directly impact its ability to photosynthesize and survive. Urban development and industrial activities have significantly reduced suitable habitat and increased pollution levels in areas where this lichen historically occurred.
Habitat
This lichen grows exclusively on siliceous rocks, particularly granite and sandstone outcrops in montane and subalpine regions. It typically colonizes exposed, well-lit rock faces and boulder surfaces at elevations between 800-2000 meters, favoring areas with clean air and minimal human disturbance.
Other threatened species in Physciaceae
Threatened in Canada
Frequently asked questions
Why is Rinodina stictica classified as Critically Endangered?
Where does Rinodina stictica live?
What are the main threats to Rinodina stictica?
Get weekly conservation intelligence
One short digest a week of the most striking species and country data we ship, plus breaking conservation news paired with our database where it matters.
Free, no spam. One-click unsubscribe in every email.