Overview
The Eyelash Cup (Scutellinia scutellata), delightfully known to naturalists as the ‘eyelash fungus’ or ‘Molly Eye-licker,’ is a minuscule, jewel-like ascomycete celebrated worldwide for its astonishing, photogenic beauty. Commonly encountered in clusters on damp, mossy rotting logs beside forest streams, this miniature cup fungus resembles a tiny, brilliant scarlet-orange saucer fringed with a ring of stiff, dark brown to jet-black hairs that look remarkably like human eyelashes. Widely distributed across temperate woodlands, it is an essential primary recycler of waterlogged forest timber.
Biology and Physical Characteristics
Scutellinia scutellata produces small, disc-shaped apothecia measuring between 2 and 12 millimeters in diameter. The upper, spore-bearing fertile surface (hymenium) is smooth, flat or slightly concave, and displays a glowing, vibrant scarlet-red, ruby, or vivid orange-red color. The underside and elevated rim of the cup are cloaked in stiff, tapered, thick-walled multicellular hairs (setae) measuring up to one millimeter long; under microscopic examination, these hairs are root-like, multi-septate, and serve to shield the delicate fertile disc from drying out. The microscopic ascospores are ellipsoid, distinctly warted, and contain multiple oil droplets.
Behavior and Ecology
As an obligate saprotroph, the Eyelash Cup thrives in micro-habitats with high, persistent moisture. Its fine vegetative mycelium penetrates deeply into the softened tissues of waterlogged rotting logs (especially birch, willow, beech, and alder) and damp organic soil, secreting digestive enzymes that break down tough cellulose fibers into accessible sugars. When moisture and temperature conditions align from late spring through autumn, the fungus fruits profusely, often producing dozens of bright red discs clustered together. When mature, changes in ambient humidity trigger the pressurized ejection of thousands of microscopic spores into the forest breeze.
Conservation and Human Impact
The Eyelash Cup is classified as Least Concern, being widespread, frequent, and ecologically secure across temperate and boreal forest ecosystems globally. While the species itself faces no immediate extinction threats, healthy populations depend directly on the preservation of mature, undisturbed riparian woodlands with intact stream corridors and an abundance of damp, coarse woody debris. Modern conservation forestry practices that leave fallen logs and dead branches in place provide vital sanctuary for this tiny, radiant decomposer.
Interesting Factoid
The Eyelash Cup looks exactly like a tiny doll’s eye: a bright ruby-red disc fringed with a perfect circle of stiff black ‘eyelashes’ that help shield its delicate spore surface from drying out.