ITALIC 7.0

Lichinella myriospora (Zahlbr.) P.P. Moreno & Egea ex M. Schultz

Bryologist, 108, 4: 582, 2005. Basionym: Psorotichia myriospora Zahlbr. - Ann. Mycol., 1: 355, 1903

Synonyms:

Distribution: N - Emil (Ravera & al. 2022b).

Description: Thallus crustose, black, dull, gelatinous when wet, granulose to irregularly areolate, the areoles flat to slightly convex, up to 0.3 mm wide and 0.1-0.2 mm thick, attached by rhizohyphae, forming up to 3 cm wide patches. Thallus structure homoiomerous, densely reticulate to paraplectenchymatous with short mycobiont cells measuring 3-7.5 x 2.5-3 µm. Apothecia thallinocarp, finally filling the entire areoles and hence inconspicuous, 1(-2) per areole, immersed to semi-immersed, 0.12-0.25(-0.3) mm wide, slightly to rather strongly convex or with a depressed center, with a rough disc and an indistinct, not prominent, c. 50 µm wide thalline margin. Proper exciple absent; hymenium colourless, not separated into partial hymenia, although packets of sterile tissue may intrude between the asci, 70-80 µm high, K/I+ blue rapidly turning reddish brown; hypothecium colourless. Asci 16-24(-32)-spored, thin-walled. Ascospores 1-celled, hyaline, broadly ellipsoid, 5-7.5 x 2.5-4 µm. Photobiont cyanobacterial, chroococcoid, the cells single or paired, enclosed in yellowish brown gelatinous sheaths. Spot tests: all negative. Chemistry: without lichen substances.

Note: this species, with a scattered distribution across southwestern and southeastern Europe, Mongolia and North America (Schultz 2007, Candan & Schultz 2015) grows on calciferous rocks, sometimes on mineral soil, in sun-exposed, dry sites. The species is closely related to Psorotichia suffugiens (which also belongs into Lichinella). The description follows Schultz (2007a).

Growth form: Crustose

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

Photobiont: cyanobacteria, coccaceous (e.g. Gloeocapsa)

Reproductive strategy: mainly sexual

On otherwise dry surfaces with short periods of water seepage after rain

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

Index Fungorum GBIF

Arizona State University Lichen Herbarium (ASU:Lichens) – Determiner: Garry Neil (24-01-2021) Collector: Garry Neil Number: 500 Date: 2020-04-30 Locality: United States, Arizona, Yavapai, Transept Trail, Red Rock Ranger District, Red Rock Ranger District; 34.790756 -111.789436 34.790756 -111.789436 Elevation: 1298 m Habitat: Front SW side of a sandstone cliff face, totally exposed, within a piñon-juniper woodland Substrate: rock - CC BY-NC 3.0 - Source: Consortium of Lichen Herbaria (2023) http//:lichenportal.org/portal/index.php. Accessed on December 18.