ITALIC 7.0

Naetrocymbe laburni (Leight. ex Arnold) ined.

provisionally placed here, ICN Art. 36.1b. Basionym: Arthopyrenia laburni Leight. ex Arnold - Flora (Regensburg), 44: 537, 1861

Synonyms:

Distribution: N - Emil (Fariselli & al. 2020)

Description: Thallus crustose, inconspicuous, dark brown to black, non-lichenized. Perithecia black, somehow shiny, more or less circular in outline, scattered or clustered, 0.2-0.25 mm across. Involucrellum dimidiate, brown both in water and in K, of compacted hyphae and bark cells; exciple thin, usually colourless, surrounding the centrum; pseudoparaphyses rather short-celled and richly branched and anastomosing; downwardly projecting periphysoids present near the ostiole. Asci 8-spored, obpyriform, fissitunicate, with two functional wall layers, with a distinctive apical region lacking a nasse, 36-48 x 18-21 μm. Ascospores 1-septate, hyaline (sometimes yellowish brown and 3-septate when overmature), slightly constricted at septum, the cells often biguttulate, but without median constrictions, (14-)18-22(-23) x (3-)5-6 μm, with a usually distinct c. 1 μm thick (in K) perispore. Photobiont absent. Spot tests: all negative. Chemistry: without lichen substances.

Note: a probably non-lichenised species resembling N. fumago in the thallus indicated by dark patches, but the 1-septate ascospores virtually narrower due to their length; on smooth bark, especially of Laburnum.

Growth form: Fungus

Substrata: bark

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: very rare

Submediterranean belt: very rare

Padanian area: absent

Humid submediterranean belt: absent

Humid mediterranean belt: absent

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

P.L. Nimis CC BY-SA 4.0

TSB 3063

P.L. Nimis CC BY-SA 4.0

TSB 3063

Photo uploaded by P. Cannon - CC BY-SA NC - Source: http://fungi.myspecies.info/all-fungi/naetrocymbe-laburni