Arachnopeziza aurata

Lignicolous species characterized by growing on a delicate web of threads resembling a spider's web, with sessile cup-shaped apothecia, white to yellow, only 0.5 to 0.7 mm in diameter, with the outer margin covered in short white hairs.

Marginal hairs hyaline, septate, up to 110 µm long, 3 to 5 µm wide, with some crystalline encrustations on their surface that dissolve in KOH.

Asci 8-spored with ascospores arranged in parallel inside, 70 to 90 µm long, 8 to 10 µm wide, with croziers at their base and an amyloid reaction of their apical apparatus in Melzer's reagent.

Ascospores acicular with one rounded end and the other somewhat more pointed, 60 to 75 µm long, 2 to 3.7 µm wide, with 5 to 7 septa and numerous guttules inside.

Herbarium material available: JTP1915/23.