Opegrapha durieui Mont.

in Durieu, Flore Algérie Crypt., 1: 279, 1846-1849.
Synonyms: Enterographa durieui (Mont.) Redinger; Opegrapha arthonioidea (Nyl.) Nyl.; Opegrapha grumulosa var. arthonioidea Nyl.; Opegrapha polymorpha (Müll. Arg.) Müll. Arg.; Stigmatidium polymorphum Müll. Arg.
Distribution: C - Tosc, Sar. S - Pugl (Nimis & Tretiach 1999), Si (Nimis & al. 1994).
Description: Thallus crustose, episubstratic,continuous to rimose or rimose-areolate, smooth to granulose, white, sometimes with a pinkish hue, without a distinct prothallus, often forming orbicular patches. Apothecia ellipsoid to lirelliform, often curved, sometimes stellate, immersed, 0.5-3 x 0.2-0.4 mm, simple or sparingly branched, black, with an initially slit-like, later slightly expanded, sometimes whitish-pruinose disc, without a distinct proper margin, often surrounded by a pale, false thalline margin. Proper exciple thin, brown-black, extending below the hymenium; epithecium brown, 25-20 µm high; hymenium colourless, 80-125 µm high, I+ reddish; paraphysoids branched and anastomosing, 1.5-2 µm thick, the apical cells hardly swollen; subhymenium brown, 25-50 µm high, I+ blue; hypothecium brown-black, 25-75 µm high. Asci 8-spored, cylindrical-clavate, the entire endoascus faintly amyloid, the apical apparatus poorly differentiated. Ascospores 3-septate, ellipsoid to subfusiform, straight or slightly curved, 19-25 x 5-7 µm, with a 1.5-2 µm thick, gelatinous perispore. Pycnidia immersed, black, often confluent. Conidia hyaline, straight, 4-6 x 1-1.2 µm. Photobiont trentepohlioid. Spot tests: K-, C-, KC-, P-. Chemistry: without lichen substances.
Note: a mainly Mediterranean species found on steeply inclined to underhanging, generally north-facing surfaces of hard calcareous rocks near the coast. It probably does not belong to Opegrapha s.str.
Growth form: Crustose
Substrata: rocks
Photobiont: Trentepohlia
Reproductive strategy: mainly sexual
Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)
Taxon bound to maritime-coastal situations

Commonnes-rarity: (info)

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

pH of the substrata:

12345

Solar irradiation:

12345

Aridity:

12345

Eutrophication:

12345

Poleotolerance:

0123

Altitudinal distribution:

123456


Predictive model
Herbarium samples


P.L. Nimis
TSB 35700



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (26213)
2001/12/15



P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (38287)
2008.02.23



P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (38285)
2008.02.23



Domenico Puntillo; Owner: Domenico Puntillo
Italy



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (35700)
2003/01/22
apothecia


LITERATURE


Unknown authorUnknown yearUnknown title.

Unknown authorUnknown yearUnknown title.

Unknown authorUnknown yearUnknown title.

Unknown authorUnknown yearUnknown title.

Unknown authorUnknown yearUnknown title.

Unknown authorUnknown yearUnknown title.

Unknown authorUnknown yearUnknown title.

Unknown authorUnknown yearUnknown title.

Unknown authorUnknown yearUnknown title.

Unknown authorUnknown yearUnknown title.

Unknown authorUnknown yearUnknown title.

Unknown authorUnknown yearUnknown title.

Unknown authorUnknown yearUnknown title.

Unknown authorUnknown yearUnknown title.

Unknown authorUnknown yearUnknown title.

Unknown authorUnknown yearUnknown title.