Chaenothecopsis treicheliana (Stein) Kalb

Herzogia, 6: 77, 1983. Basionym: Calicium treichelianum Stein - Schr. naturf. Ges. Danzig, N.S. 6, 2: 89, 1885.
Distribution: S - Cal (Puntillo 1996, Brackel 2016).
Description: Thallus not evident, not lichenized. Apothecia short-stalked, 0.12-0.2 mm high, pin-like, developing on the thalli of epiphytic Lecanora-species. Stalk black in upper part, pale brown to whitish in lower part, epruinose, 50-60 µm thick, formed by intertwined, brownish hyphae. Capitulum lenticular, black, epruinose, 0.1-0.2 mm across. Excipulum brown, of intertwined hyphae; epithecium poorly evident; mazaedium not present; hypothecium brown. Asci 8-spored, cylindrical to subclavate, with a thickened apex penetrated by a narrow canal, formed singly, persisting until the uniseriately arranged spores are mature. Ascospores 1-celled, greyish brown to dark brown at maturity, narrowly ellipsoid, (4.5-)5.3-7(-7.5) x 2.5-3(-3.5) µm, with a minutely verrucose surface. Photobiont absent. Spot tests: ascocarps K-, C-, KC-, P-. Chemistry: without lichen substances.
Note: Tibell & Ryman (1995) did not recognize Ch. treicheliana as a distinct species and presumed it might be a synonym of Ch. hospitans. However, according to Gasparyan & al. (2014), Ch. hospitans shows a faint K+ reaction of the ascomata, and its stalk and the ascospores are distinctly larger (7.8-9.6 × 3.9-5 µm). The species, which is also known from Austria, Poland and Armenia, occurs as a parasite on the thalli of epiphytic Lecanora-species.
Growth form: Lichenicolous fungus
Substrata: bark
Reproductive strategy: mainly sexual
In underhangs rarely wetted by rain
paras Lecanora spp.

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: extremely rare
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: very rare
Humid mediterranean belt: absent
Dry mediterranean belt: absent

pH of the substrata:


Solar irradiation:








Altitudinal distribution:


Predictive model

E. Pittao CC BY-SA 4.0
TSB 13668

Elena Pittao; Owner: Derpartment of Life Sciences, University of Trieste CC BY-SA 4.0
Herbarium: TSB (13668)

Elena Pittao; Owner: Derpartment of Life Sciences, University of Trieste CC BY-SA 4.0
Herbarium: TSB (13668)