Cladonia pocillum (Ach.) O.J.Rich.
Baeomyces pocillum Ach., Meth. Lich.: 336 (1803).
Primary squamules well-developed, forming a ± imbricate or contiguous, horizontally spreading rosette, upper surface glaucescent to olive-green or brownish, lower surface white, darkening towards base, not sorediate. Podetia growing from upper surface of primary squamules, mainly at centre of thallus, to 20 mm tall, simple, rarely with short, marginal proliferations bearing apothecia, scyphiferous, cups flaring gradually, ± goblet-shaped, interior closed, with peltate squamules in cup. Cortex greyish or olive-green or brownish, squamulose, squamules peltate. Apothecia brown, on margins of cups, on short stalks. Chemistry: Cortex K-, KC-, Pd+ red. Fumarprotocetraric acid, ± atranorin.
S: Canterbury (Cave Stream, Weka Pass). On limestone soils, among mosses, probably more widely distributed on calcareous substrates. The species is discussed by Ahti [ Annls bot. fenn. 3: 388 (1966)].
Cosmopolitan
