Lichenologist 33: 273 (2001).

Thallus: Primary thallus well developed, of quite large and thick squamules, which are never coalescent; upper side greenish-grey, sometimes tinged with brown, lower side white in the younger parts, sometimes with greenish-grey areoles with gonidial layer, darkening toward the older parts; podetia up to 1.5 cm tall, with ± regular cups, up to 7 mm wide, simple, rarely with sterile scyphose or fertile branched proliferations; cups inside with bullate corticate plates; outer surface corticate areolate and also covered with bullate plates. Apothecia present in one specimen, brown, simple or in glomerulose accumulations, formed on branched proliferations.

Photobiont: Data lacking.

Chemistry: Fumarprotocetraric acid with satellite substances (Kowalewska & Kukwa 2004: 104).

Ecology: On acid soil.

Molecular data: Genbank

Distribution: Database

Note: "Cladonia monomorpha is chemically identical with C. pocillum (Ach.) Grognot and C. pyxidata. These taxa can be distinguished by their morphology, as tabulated by APTROOT et al. (2001). Morphologically, the species is also similar to C. borealis S. Stenroos; however, that species has red pycnidia and apothecia and is yellowish tinged due to the presence of usnic acid (STENROOS 1989)." Kowalewska & Kukwa (2004: 104)