Austrian Scarlet Cup
Sarcoscypha austriaca
The Austrian Scarlet Cup is a saprobic fungus characterized by its brilliant scarlet-red inner surface and paler, fuzzy exterior. It typically grows in clusters on fallen or buried branches of deciduous trees, particularly willows and alders. The cup-shaped fruiting bodies appear in late winter or early spring, often as soon as the snow melts.
Details
Identification
Brilliant red cup shape; exterior whitish-pink and finely tomentose; microscopically characterized by coiled or corkscrew-shaped hairs.
Social behavior
Usually grows in clusters or groups (gregarious).
Diet
Saprotrophic; decomposes dead wood of deciduous trees, especially willow, alder, maple, and black locust.
Overwintering
Fruiting body formation occurs during winter months and early spring.
Ecology
Ecological role
Important primary decomposer of dead wood in moist ecosystems; promotes nutrient cycling.
Natural predators
Slugs and various insect larvae.
Competitor species
Other scarlet cup species such as Sarcoscypha coccinea or Sarcoscypha jurana.
Ecosystem service
Breakdown of lignin and cellulose; contributes to soil formation.
Threats
Drainage of wetlands, intensive forestry, and removal of lying dead wood.
Scientific profile
Profile
Distinguishing features
Microscopically characterized by strongly coiled hairs on the exterior and elliptical spores (25-35 x 12-15 µm) with often flattened ends and numerous small oil droplets. Macroscopically nearly indistinguishable from S. coccinea.
Habitat
Moist broadleaved forests, alluvial forests, stream banks, and shady ditches, preferring calcareous or neutral soils with high humidity.
Reproduction
Sexual reproduction via ascospores produced in eight-spored asci and actively discharged into the air upon maturity.