Description: Thallus not evident, not lichenized. Apothecia long-stalked, pin-like, 0.5-1.4 mm high. Stalk black, sometimes with a reddish tinge in upper part, the central part formed by hyaline, strongly swollen, periclinally arranged hyphae, the outer part formed by reddish brown, intricately interwoven hyphae, often containing droplets of red pigment. Capitulum black or with a reddish tinge in lower part, hemi- to subspherical, 0.1-0.3 mm across, with an excipulum of reddish brown hyphae. Epithecium brownish, thin; mazaedium not present; hypothecium reddish to yellowish brown, with dark red granules and numerous oil droplets. Asci 8-spored, cylindrical, with a thickened apex penetrated by a narrow canal, formed singly, persisting until the spores are mature. Ascospores 1-septate, pale brown, narrowly ellipsoid, 5-7 x 1.5-2.5 µm, with a poorly pigmented septum and a smooth wall. Photobiont absent. Pycnidia not rare, stalked, the stalk often branched and forming a tree-like structure with up to 30 pycnidia containing a reddish pigment. Conidia simple, hyaline, with a slightly truncate proximal end, 2-2.5 x c. 1 µm. Spot tests: all red-pigmented parts of thee ascomata and pycnidia K+ persistently green. Chemistry: an unidentified pigment.
Note: a mainly boreal-montane, perhaps circumpolar species found on decorticated stumps, occasionally on acid bark inside montane and subalpine forests on the thalli of Chaenotheca- and Calicium-species; probably more widespread, but never common, in the Alps.