ITALIC 8.0

Verrucaria inaspecta Servít

Preslia, 24: 359, 1952.

Synonyms: Verrucaria olivacella Servít

Distribution: N - Lig.

Description: Thallus crustose, thinly episubstratic, pale to medium greenish brown, continuous to irregularly rimose-areolate, 0.05-0.1(-0.15) mm thick, without a distinct prothallus, the areoles polygonal, flat, 0.2-0.5 mm wide. Cortex undifferentiated; medulla white. Perithecia black, 0.15-0.2(-0.25) mm across, half to ¾ immersed, with a pale ostiole. Involucrellum hemispherical or broadly conical, extending to base-level, 30-40(-50) µm thick at base, slightly thinner near apex, adpressed to exciple in upper part, slightly diverging in lower half; exciple subglobose, 0.15-0.2 mm across, the wall colourless to rarely brownish, 15-20 µm thick; hamathecium of thin, 15-20 µm long periphyses and periphysoids, interascal filaments absent; hymenial gel hemiamyloid, I+ red (I+ blue at very low concentrations of I), K/I+ blue. Asci 8-spored, clavate, I-, fissitunicate, the wall thickened above, with an ocular chamber, dehiscent by extrusion of an endotunica to form a delicate rostrum, Verrucaria-type. Ascospores 1-celled, hyaline, ellipsoid, (15-)17-22(-24) x 6-8(-9) µm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: on calcareous or base-rich siliceous rocks in rather shaded situations; similar to V. dolosa, but with larger spores, this poorly known and long-forgotten species is also known from Northern Europe and North America.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Pioneer species

Poorly known taxon in need of further study

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

Source: M. Servit, Sbornik Narodniho musea v Praze. V. B. (1949) No. 9. Tab. II. – Public Domain