ITALIC 7.0

Absconditella annexa (Arnold) Vězda

Preslia; 37: 244, 1965. Basionym: Secoliga annexa Arnold - Verh. zool.-bot. Ges. Wien, 25: 256, 1875.

Synonyms: Gyalecta annexa (Arnold) H. Olivier

Distribution: N - Frl (Tretiach & Hafellner 2000).

Description: Thallus crustose, very thinly episubstratic, yellowish grey to dark olive-green, most often inconspicuous, c. 50-80 µm thick, subgelatinous when wet, associated with algal films. Apothecia round or somehow elongated by mutual compression, yellowish white, pale waxy yellow to very pale brownish, translucent when wet, 0.3-0.4(-0.5) mm across, with a concave-urceolate disc and a hardly raised, moderately thick, paler, entire proper margin. Proper exciple colourless, to 35 μm thick laterally, to 20 μm thick basally; epithecium indistinct, colourless; hymenium colourless, 70-90 μm high; paraphyses mostly simple, rarely forked in upper part, not or only slightly thickened at tips; hypothecium very thin, colourless. Asci 8-spored, long-cylindrical, thin-walled, the upper part with a rather indistinct, K/I- apical dome penetrated by a narrow tube. Ascospores (3-)5-7(-9)-septate, hyaline, narrowly fusiform to almost needle-like, straight or slightly curved, 35-40(-50) x 2.5-3.5 μm. Photobiont chlorococcoid, the cells 8-12 μm across. Spot tests: thallus K-, C-, KC-, P-. Chemistry: without lichen substances.

Note: a probably arctic-alpine, ephemeral lichen found on moribund bryophytes and organic soil on siliceous substrata, with optimum near and above treeline. Easily overlooked, it is perhaps more widespread in the Alps.

Growth form: Crustose

Substrata: soil, terricolous mosses, and plant debris

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Pioneer species

Commonnes-rarity: (info)

Alpine belt: rare

Subalpine belt: very rare

Oromediterranean belt: absent

Montane belt: absent

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

P.L. Nimis CC BY-SA 04

TSB 8246

Pier Luigi Nimis - CC BY-SA 4.0

TSB 8246

V. J. Rico - Univ. Complutense, Madrid

SPAIN. Madrid: Sán Lorenzo de El Escorial, near Silla de Felipe II, 40º 35’N, 04º 09’W, 1080 m, associated with Protoparmelia montagnei on granite, July 1986, Florido & Rico 1133/1 (holotype MAF-Lich. 16463).
Detail of squamules with apothecia, showing dark lateral surface (photograph V. J. Rico).