Polyblastia rouxiana Vězda & Vivant

Bull. Soc. Bot. France, 120, 3-4: 154, 1973.
Synonyms:
Distribution: N - Ven (TSB 20911). C - Tosc (TSB 35614). S - Cal (Puntillo 1996, Puntillo & Puntillo 2004), Si (Nimis & al. 1994, Grillo & al. 2002, Grillo & Caniglia 2004, Caniglia & Grillo 2005, 2006).
Description: Thallus crustose, episubstratic, thin and film-line to verruculose, bluish-grey to greenish grey. Perithecia black, initially globose, then flask-shaped, immersed in the thallus and/or in the substratum and projecting only with the apical part, 0.5-0.7 mm across. Involucrellum absent; exciple 30-40 μm thick, brown-black throughout; hamathecium of periphyses and periphysoids, interascal filaments absent; hymenial gel I+ red, K/I+ blue. Asci 8-spored, clavate, K/I-, fissitunicate, the wall thickened above, with a broad ocular chamber, dehiscent by extrusion of an endotunica to form a delicate rostrum. Ascospores muriform, at first hyaline then brown, ellipsoid, slightly narrower and more pointed at one end, 40-55 x 20-25 μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: on bare soil in clearings of garrigue and maquis vegetation over calcareous substrata, mainly in the Mediterranean belt. For further details see Roux & al. (2014: 905).
Growth form: Crustose
Substrata: soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

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

pH of the substrata:

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Solar irradiation:

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Aridity:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Predictive model
Herbarium samples
Index Fungorum GBIF


P.L. Nimis CC BY-SA 04
TSB 33887



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (33887)
2003/03/06



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (15812)
2003/03/06



Domenico Puntillo; Owner: Domenico Puntillo
Italy