in Tibell & Ryman, Nova Hedwigia, 60: 215, 1995. Basionym: Calicium subparoicum Nyl. - Herb. Mus. Fenn.: 78, 1859.
Distribution: N - TAA (Arnold Lich. Exs. 1132: Tibell & Ryman 1995, Brackel 2016). C - Tosc (Tretiach 2004, Puntillo & Puntillo 2009, Brackel 2016), Sar (Puntillo & Puntillo 2009, Brackel 2016). S - Cal (Puntillo & Puntillo 2009, Brackel & Puntillo 2016, Brackel 2016).
Description: Thallus not evident, not lichenized, parasitic on crustose lichens. Apothecia short-stalked, 0.2-0.3 mm high, solitary or in clusters of up to 7-8. Stalk black, the central part formed by pale brown to yellowish, mostly periclinally arranged hyphae, the outer part of strongly sclerotized and intertwined hyphae. Capitulum black, hemispherical to lenticular, 0.2-0.3 mm across, with an excipulum consisting of 2-3 layers of dark aeruginose hyphae. Epithecium dark brown; mazaedium not present; hypothecium pale yellowish brown. Asci 8-spored, cylindrical, with a thickened apex penetrated by a narrow canal, formed singly, persisting until the spores are mature, with 1-seriate ascospores. Ascospores 1-septate, brown, ellipsoid, 7-8 x 2.5-4 µm, with a thick, dark septum and a minute, irregular ornamentation. Photobiont absent. Spot tests: ascocarps K-, C-, KC- P-, N-. Chemistry: without lichen substances.
Note: in underhangs of siliceous rocks, on the thalli of Haematomma ochroleucum and Tephromela grumosa; according to Roux & coll. (2014) it sometimes grows also on Enterographa zonata.
Growth form: Lichenicolous fungus
Reproductive strategy: mainly sexual
Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)
In underhangs rarely wetted by rain
paras Haematomma ochroleucum s.lat. and Tephromela grumosa