ITALIC 8.0

Neocatapyrenium radicescens (Nyl.) Breuss

Ann. naturhist. Mus. Wien, 98B: 40, 1996. Basionym: Verrucaria radicescens Nyl. - Bull. Soc. Bot. France, 10: 267, 1863.

Synonyms: Catapyrenium radicescens (Nyl.) Breuss; Dermatocarpon pachylepis (Anzi) Zahlbr.; Endocarpon pachylepis Anzi

Distribution: N - Lomb.

Description: Thallus squamulose, of contiguous to overlapping, 2-5 mm wide, sinuous to sublobate, grey-brown squamules forming flattened to slightly convex, up to 4 cm wide pillows. Lower surface black, paler at margins, without rhizohyphae, attached by up to 1.5 mm thick and up to 20 mm long, simple or sparingly branched, black rhizines. Upper cortex paraplectenchymatous, 40-60 µm thick, of 5-8 µm wide cells; medulla white, prosoplectenchymatous, up to 300 µm thick; lower cortex clearly delimited from the medulla, with rounded to angular cells. Perithecia black, pyriform, up to 0.4 mm across, immersed in the squamules, without involucrellum. Exciple up to 40 µm thick, with a pigmented outer layer and a colourless inner layer; periphyses 40-50 x 2-3 µm, interascal filaments absent. Asci 8-spored, clavate, the wall I-, with biseriately arranged spores. Ascospores 1-celled, hyaline, broadly ellipsoid, 14-18 x 9-10.5 µm. Pycnidia laminal, immersed in the squamules, up to 400 µm wide, rounded to cerebriform, Endocarpon-type. Conidia cylindrical, 7-11 x 1-1.5 µm. Photobiont chlorococcoid. Spot tests: cortex and medulla K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: on more or less fissured siliceous rocks near or above treeline; hitherto known only from southern France, Italy and Switzerland.

Growth form: Squamulose

Substrata: rocks, soil, terricolous mosses, and plant debris

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: extremely rare

Subalpine belt: extremely rare

Oromediterranean belt: absent

Montane belt: absent

Submediterranean belt: absent

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

Index Fungorum GBIF

Source: Breuss O. 1990. Die Flechtengattung Catapyrenium (Verrucariaceae) in Europa. Stapfia, 23: 1-153.