Calicium piperatum F.Wilson
* Account prepared by Dr L. Tibell (Uppsala).
Thallus immersed. Apothecia very short-stalked to almost sessile, 0.21-0.29 mm high, without pruina. All parts of apothecium I-. Capitulum lenticular to slightly bell-shaped, 0.23-0.31 mm diam. Excipulum of strongly interwoven, dark aeruginose to brown hyphae. Excipular hyphae strongly sclerotized but paler towards surface of capitulum. Stalk very short, consisting of similar tissue to excipulum, though in section often with a stronger aeruginose tinge. Hypothecium dark brown with flat or slightly convex upper surface. Asci cylindrical with uniseriate spores, 34-41 × 4-5 µm. Ascospores broadly ellipsoid, 10-12.5 × 5-7.5 µm, with ornamentation of coarse, irregular cracks. Chemistry: No secondary substances identified.
N: Gisborne, Wellington. Rare and known only from a few localities. On hard lignum decorticated stumps of Nothofagus in fairly open situations, 450-900 m. First collected in New Zealand by J.K. Bartlett.
Australasian