ITALIC 8.0

Placidium adami-borosi Szatala

Ann. Mus. Nat. Hungar., n. ser., 7: 271, 1956.

Synonyms: Catapyrenium adami-borosi (Szatala) Breuss

Distribution: C - Sar. S - Cal (Puntillo 1996), Si.

Description: Thallus squamulose, pale to medium brown, sometimes reddish brown, dull to slightly shiny, usually loosely attached. Squamules more or less rounded, smooth, (3-)6-12 mm broad, 0.4-0.7 mm thick, flat to concave, scattered to contiguous, the often up-turned margins not swollen. Lower surface black except for a pale marginal zone, attached by pale rhizohyphae. Upper cortex paraplectenchymatous, 50-80 μm thick, with an up to 15 μm thick epinecral layer; medulla prosoplectenchymatous, with 3-5 μm thick, filamentous hyphae; lower cortex 50-60 μm thick, of angular, 12-17(-20) μm wide cells arranged in vertical rows, the lowermost ones with a black pigment. Perithecia frequent, laminal, immersed in the squamules, globose to pyriform, up to 0.55 mm wide, without involucrellum. Exciple pale throughout; hamathecium of periphyses measuring 40-50 x 2.5-3.5 μm, interascal filaments absent. Asci 8-spored, subcylindrical, thin-walled, non-amyloid and without an ocular chamber, 80-90 x 14-18 μm. Ascospores 1-celled, hyaline, ellipsoid, thin-walled, uniseriately arranged in the asci, 14-17 x 6-7.5 μm. Pycnidia multilocular, Dermatocarpon-type, marginal, prominent, to 250 μm in diam. Conidia bacilliform, (4.5-)5-6(-6.5) x 1-1.5 μm. Photobiont chlorococcoid (Myrmecia). Spot tests: cortex and medulla K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a mainly Mediterranean (-montane) lichen found on soil derived from metamorphic base-rich rocks in dry grasslands.

Growth form: Squamulose

Substrata: soil, terricolous mosses, and plant debris

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: very rare

Montane belt: very rare

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

Herbarium samples

Index Fungorum GBIF

P.L. Nimis CC BY-SA 04

TSB 13699

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (13699)
2001/11/22

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (13699)
2003/02/13