Arthopyrenia cinerescens A. Massal.

Symmicta Lich.: 108, 1855.
Synonyms:
Distribution: N - Ven (Lazzarin 2000b), TAA.
Description: Thallus crustose, endosubstratic or thinly episubstratic, greenish grey to lead-grey, sometimes delimited by a dark prothalline line, doubtfuly lichenized. Perithecia black, numerous, hemispherically projecting with a widened base, often clustered. Involucrellum dimidiate; exciple black; paraphysoids persistent but scarce, branched and anastomosing. Asci 6-8-spored, subcylindrical, fissitunicate. Ascospores 3-septate, clavate, hyaline, 15-28 x 4-6 μm. Pycnidia immersed in c. 0.2 mm wide, hemispherical, black warts, with branched conidiophous hyphae. Conidia bacilliform, straight, c. 6 x 2 μm, often arranged in short chains. Photobiont absent or trentepohlioid. Spot tests: all negative. Chemistry: without lichen substances.
Note: an early coloniser of base-rich bark, also known from Slovenia. The type material, from South Tyrol, was growing on Fraxinus; this is the type species of the monotypic genus Arthopyreniella Stein., based on differences in pycnidial apparatus.
Growth form: Crustose
Substrata: bark
Photobiont: Trentepohlia
Reproductive strategy: mainly sexual
Pioneer species
Poorly known taxon in need of further study

Commonnes-rarity: (info)

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


pH of the substrata:

(info)

1

2

3

4

5

Solar irradiation:

(info)

1

2

3

4

5

Aridity:

(info)

1

2

3

4

5

Eutrophication:

(info)

1

2

3

4

5

Poleotolerance:

(info)

0

1

2

3

Altitudinal distribution:

(info)

1

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4

5




Trevian, Lichenotheca Veneta Nr. 53


Source: Keissler K. von 1938. Pyrenulaceae, Mycoporaceae, Coniocarpineae. In: Rabenhorst G L: Kryptogamen-Flora von Deutschland, Österreich und der Schweiz. 2nd, IX, Die Flechten, Abt. 1, 2. Gebr. Borntraeger, Leipzig, pp. 1-846.


Source: Keissler K. von 1938. Pyrenulaceae, Mycoporaceae, Coniocarpineae. In: Rabenhorst G L: Kryptogamen-Flora von Deutschland, Österreich und der Schweiz. 2nd, IX, Die Flechten, Abt. 1, 2. Gebr. Borntraeger, Leipzig, pp. 1-846.


Source: Keissler K. von 1938. Pyrenulaceae, Mycoporaceae, Coniocarpineae. In: Rabenhorst G L: Kryptogamen-Flora von Deutschland, Österreich und der Schweiz. 2nd, IX, Die Flechten, Abt. 1, 2. Gebr. Borntraeger, Leipzig, pp. 1-846.


Trevian, Lichenotheca Veneta Nr. 53


NMNH - Botany Dept. https://collections.si.edu/search/results.htm?q=record_ID=nmnhbotany_2873625&repo=DPLA


Trevian, Lichenotheca Veneta Nr. 53