ITALIC 7.0

Puttea caesia (Fr.) M. Svenss. & T. Sprib.

in Dillman & al., Herzogia, 25: 182, 2012. Basionym: Agyrium caesium Fr. - Syst. Mycol. (Lundae) 2, 1: 231, 1822.

Synonyms: Biatora symmictella (Nyl.) Arnold; Lecidea symmictella Nyl.

Distribution: N - TAA (Nascimbene & al. 2007b).

Description: Thallus crustose, mostly endosubstratic and poorly evident, consisting of a thin layer of delicate hyphae and small algal cells. Apothecia lecideine to biatorine, 0.1-0.2 mm across, whitish, pale yellow or pale brown-pink, often mottled when old, more or less round, with a convex disc and a thin, dark, finally sometimes excluded proper margin. Proper exciple with an outer wall of perpendicularly arranged, parallel, gelatinized hyphae with narrow lumina, the apical cells thickened (to c. 4 µm) and often brown-capped, the inner part of gelatinized interwoven hyphae; epithecium scarcely differentiated from the hymenium, covered with a narrow gelatinous layer overlain by yellowish crystals dissolving in K and in N; hymenium colourless, 30-40 μm high; paraphyses branched and anastomosing, as long as the asci; hypothecium colourless. Asci 8-spored, clavate, with a K/I+ blue tholus including a thin, darker K/I+ blue tubular ring-structure, Micarea-type. Ascospores 1-celled, hyaline, ellipsoid to subfusiform, 3-7(-10) x 1-2(-2.5) μm, thin-walled. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: on hard lignum., e.g. on horizontal faces of old stumps, sometimes on mosses, mostly in upland areas. See also note on Catillaria erysiboides.

Growth form: Crustose

Substrata: lignum

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Poorly known taxon in need of further study

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: very rare

Oromediterranean belt: absent

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

Index Fungorum GBIF

Einar Timdal, Natural History Museum, University of Oslo, Norway