Lachnum papyraceum

A lignicolous species preferring coniferous wood, with white stipitate apothecia 0.5-1.5 mm in diameter, with hyaline marginal hairs.

Marginal hairs cylindrical, septate, 45-95 µm long and 2.5-4 µm wide, without apical inflations, covered across their entire surface with fine granulations or warts.

Medullary excipulum composed of filamentous, cylindrical, septate hyphae, 2-3 µm thick, very thin-walled, densely interwoven (textura intricata).

Ectal excipulum composed of rectangular hyphae of textura prismatica, hyaline, thick-walled, parallelly arranged, 12-20 µm long.

Asci cylindric-clavate, 8-spored, with biseriate to irregular spore arrangement, 55-75 µm long and 5-7.5 µm wide, with basal croziers and an amyloid apical apparatus in Melzer's reagent.

Paraphyses lanceolate, 3-4.5 µm wide, barely projecting above the level of the asci.

Ascospores ellipsoidal to fusiform, smooth, hyaline, thin-walled, with homogeneous or very finely granular internal content.

Herbarium material available: 1930/23.