Metatrichia vesparia

Stipitate sporocarps growing in dense clusters, with pyriform sporothecae 0.5–0.7 mm in diameter by 1–1.5 mm high, very dark glossy red (almost black), on a shared, fused reddish-brown stalk uniting up to 12 sporocarps, reaching a total height of up to 4 mm.

Peridium double, thick, fragile, with a thick, coriaceous, granular outer layer and a thin membranous inner layer, dehiscing via an operculum while the lower part persists as a deep calyculus (cup).

Capillitium with short reddish-brown elaters 6–8 µm wide, branched, ornamented with 3–5 spiral bands bearing spines 1–3 µm long, with scarce free pointed tips.

Spores subglobose, yellowish-brown under the microscope, moderately thick-walled and verrucose, measuring 8.5–12 µm long by 8–10 µm wide.