ITALIC 8.0

Micarea viridileprosa Coppins & van den Boom

in van den Boom & Coppins, Lichenologist, 33: 87, 2001.

Synonyms:

Distribution: S - Camp (van den Boom & Coppins 2001).

Description: Thallus crustose-subleprose, thinly episubstratic, made up of bright green goniocysts, forming up to 8 cm wide patches. Goniocysts consisting of a few algal cells incompletely surrounded by hyaline hyphae, 12-19 μm wide, often coalescing into 25-45 μm wide granules, locally proliferating and giving the impression of irregular soralia producing farinose soredia. Apothecia usually absent, micareoid, adpressed to semi-immersed, 0.1-0.5 mm across, whitish, convex, without a distinct proper margin. Proper exciple poorly developed, most evident in young apothecia, colourless, of radiating and anastomosing hyphae; epithecium scarcely differentiated from the hymenium; hymenium colourless, 35-50 μm high; paraphyses numerous, richly branched, 1.5-2 μm thick, the apical cells hardly wider; hypothecium colourless. Asci 8-spored, clavate to cylindrical-clavate, with an unstained wall and a K/I+ blue outer layer and apical dome, the latter with a non-amyloid, cylindrical axial mass. Ascospores 0-1(-2)-septate, hyaline, oblong-ellipsoid or obovoid, 8-12(-14) x 1.3-2 μm, often with 1-4 oil droplets. Pycnidia very rare, grey brown, sessile to stalked, 2-50 μm wide, the wall grey-brown, K+ and C+ violet. Conidia narrowly ellipsoid to fusiform, 4.5-6 x 1.3-2 μm. Photobiont micareoid, the cells 4-7 μm wide. Spot tests: thallus and apothecial sections K-, C+ red, KC+ red, P-. Chemistry: thallus and apothecia with gyrophoric acid; pycnidial walls with an unknown olivaceous pigment.

Note: a recently-described, mostly sterile species found on a wide variety of acid substrata in humid lowland areas; probably more widespread in semi-natural sites of Tyrrhenian Italy. It is included in the Italian red list of epiphytic lichens as “Critically Endangered” (Nascimbene & al. 2013c).

Growth form: Crustose

Substrata: bark, lignum, soil, terricolous mosses, and plant debris

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: absent

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: very 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

Index Fungorum GBIF

Mark Powell CC BY-SA NC

Herbarium: Holotype
Source:http://fungi.myspecies.info/taxonomy/term/8258/media