Chaenothecopsis parasitaster (Bagl. & Carestia) D. Hawksw.

Notes R. Bot. Gard. Edinb., 36: 184, 1978. Basionym: Calicium pusillum var. parasitaster Bagl. & Carestia - Atti Soc. Crittogam. Ital. 2: 246, 1880,
Synonyms: Calicium parasitaster (Bagl. & Carestia) Zopf
Distribution: N - TAA (Puntillo & Puntillo 2009, Brackel 2016), Lomb (Jatta 1909-1911, Brackel 2016), Piem (Puntillo & Puntillo 2009, Brackel 2016).
Description: Thallus not evident, not lichenized, parasitic on squamules of Cladonia. Apothecia stalked, pin-like, 0.5-0.9 mm high. Stalk black or rarely pale greenish, brownish or grey in lower part, always darker in upper part, the central part formed by pale, in lower part intricately interwoven, in upper part periclinally arranged hyphae, the outer part brown to greenish, formed by periclinally arranged, sclerotized hyphae. Capitulum lenticular, 0.2-0.3 mm across, black or sometimes fainly white pruinose in upper part, with an excipulum of greenish to brown, periclinally arranged hyphae. Epithecium thin, greenish or brown in section; mazaedium not present; hypothecium pale or greenish brown. Asci 8-spored, cylindrical, with a thickened apex penetrated by a narrow canal, formed singly, persisting until the spores are mature. Ascospores 1-septate, medium brown, ellipsoid, 6-7 x 2-2.5 µm, with a smooth wall. Photobiont absent. Spot tests: ascocarps K-, C-, KC- P-. Chemistry: no lichen substances, except unidentified greenish or brownish pigments.
Note: this taxon, frequently synonymised with Ch. pusilla, seems to be a distinct species (see Groner 2010), which is strictly parasitic on Cladonia spp.
Growth form: Lichenicolous fungus
Reproductive strategy: mainly sexual
In underhangs rarely wetted by rain
paras Cladonia spp.

Commonnes-rarity: (info)

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


pH of the substrata:

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5

Solar irradiation:

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5

Aridity:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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E. Pittao CC BY-SA 04
TSB 9207



Elena Pittao; Owner: Derpartment of Life Sciences, University of Trieste CC BY-SA 4.0
Herbarium: TSB (9207)
02/02/2017



Elena Pittao; Owner: Derpartment of Life Sciences, University of Trieste CC BY-SA 4.0
Herbarium: TSB (9207)
02/02/2017



Elena Pittao; Owner: Derpartment of Life Sciences, University of Trieste CC BY-SA 4.0
Herbarium: TSB (9207)
02/02/2017



Elena Pittao; Owner: Derpartment of Life Sciences, University of Trieste CC BY-SA 4.0
Herbarium: TSB (9207)
02/02/2017