Collema subflaccidum is a species of lichen, a symbiotic association between a fungus and an alga or cyanobacterium. This particular lichen belongs to the family Collemataceae and is known for its distinctive appearance and ecological role.

In the Comunidad Valenciana, Collema subflaccidum can be found in various natural habitats, where it typically grows on shaded, calcareous rocks. Its presence indicates a healthy ecosystem, often contributing to soil formation and serving as a habitat for microorganisms.

• Appearance: The thallus of Collema subflaccidum is gelatinous, olive to dark olive in color, and can appear somewhat swollen or shriveled based on its hydration level.
• Habitat: Prefers humid, shady environments and is commonly found on limestone or calcareous substrates.
• Ecological Role: Functions as both a pioneer species in ecosystems, helping to stabilize soils, and a bioindicator for air quality and ecological health.
• Local Importance: In the Comunidad Valenciana, its presence showcases the region's rich biodiversity and the intricate balance of its natural systems.

Although Collema subflaccidum might not be widely known by local names, understanding its roles and characteristics enriches our appreciation of the delicate ecosystems in the Comunidad Valenciana.