ITALIC 8.0

Tomasellia gelatinosa (Chevall.) Zahlbr.

Cat. Lich. Univ., 1: 474, 1922. Basionym: Arthonia gelatinosa Chevall. - J. Phys. Chem. Hist. Nat., 94: 54, 1822.

Synonyms: Athrismidium gelatinosum (Chevall.) Trevis.; Melanotheca gelatinosa (Chevall.) Zahlbr.; Melanotheca leightonii (A. Massal.) Kremp.; Tomasellia leightonii A. Massal.

Distribution: N - Ven, Lig. C - Umb (Ravera 1999, Ravera & al. 2006), Laz (Ravera 2006, Munzi & al. 2007), Mol (Caporale & al. 2008). S - Cal (Puntillo 1996).

Description: Thallus crustose, not lichenized, mostly endosubstratic and poorly evident, brownish or reddish brown, sometimes delimited by a dark line. Ascocarps perithecioid, aggregated into circular to ellipsoid, 0.3-1 mm wide pseudostromata with an overlying black wall which is not continuous below the hamathecium, 10-50 per pseudostroma. Hamathecium of branched, not anastomosing, non-amyloid, 1.5-2.5(-3) thick µm pseudoparaphyses. Asci 8-spored, obclavate, tapering to apex, fissitunicate, with two functional wall layers, K/I-. Ascospores (1-)3-septate with eusepta, hyaline or finally pale brown, clavate to ellipsoid, 18-27 x 5-7(-10) µm, the wall not ornamented, the perispore indistinct. Photobiont absent. Spot tests: all negative. Chemistry: without lichen substances.

Note: a mainly temperate, pioneer, non-lichenized fungus growing on the smooth bark of deciduous trees (e.g. Alnus, Corylus, Sorbus, Tilia, etc.).

Growth form: Non-lichenised and non-lichenicolous (including semilichens)

Substrata: bark

Reproductive strategy: mainly sexual

Pioneer species

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: absent

Submediterranean belt: very rare

Padanian area: absent

Humid submediterranean belt: rare

Humid mediterranean belt: very rare

Dry mediterranean belt: absent

pH of the substrata:

1

2

3

4

5

(info)

Solar irradiation:

1

2

3

4

5

(info)

Aridity:

1

2

3

4

5

(info)

Eutrophication:

1

2

3

4

5

(info)

Poleotolerance:

0

1

2

3

(info)

Altitudinal distribution:

1

2

3

4

5

6

(info)

Predictive model

Herbarium samples

INDEX FUNGORUM GBIF DOLICHENS

Manuel Gil

Spain, Canary Islands, Lanzarote, on Nicotiana glauca

Manuel Gil

Spain, Canary Islands, Lanzarote, on Nicotiana glauca

http://fungi.myspecies.info/gallery/tomasellia - Licence: CC BY-NC 3. Photo uploaded by Mark Powell