ITALIC 7.0

Lempholemma condensatum (Arnold) Zahlbr.

Cat. Lich. Univ., 3: 20, 1925. Basionym: Plectopsora botryosa var. condensata Arnold - Verh. zool.-bot. Ges. Wien, 19: 655, 1869

Synonyms:

Distribution: N - TAA.

Description: Thallus small-fruticose, homoiomerous, gelatinous when wet, dark olivaceous brown to black, consisting of 0.1-0.2(-0.3) mm thick and 1-2 mm long, simple or sparingly furcate, ascending to erect lobes, forming dense, (3-)5-10 mm wide patches or slightly convex cushions; apical hormocystangia absent. Apothecia rare, terminal, rounded, semi-immersed, up to 0.2 mm across, with a brown, finally convex disc. Proper exciple very thin, of parallel hyphae; epithecium brownish; hymenium colourless, the hymenial gel I+ reddish brown, K/I+ blue; paraphyses mostly simple, not apically thickened, coherent; hypothecium colourless. Asci 8-spored, cylindrical, without a distinct apical apparatus. Ascospores 1-celled, hyaline, subglobose to broadly ellipsoid, (13-)15-18 x 6-10 μm. Photobiont cyanobacterial (Nostoc, the individual cells 4-5 μm wide, arranged in short chains). Spot tests: all negative. Chemistry: without lichen substances.

Note: very closely related to L. intricatum, with thalli forming dense black cushions; on periodically wetted boulders and cliffs of dolomite and calcareous rocks, ecology otherwise poorly known; reported from scattered localities in the Eastern Alps, but distribution insufficiently known.

Growth form: Fruticose

Substrata: rocks

Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)

Reproductive strategy: mainly sexual

Poorly known taxon in need of further study

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: extremely rare

Oromediterranean belt: absent

Montane belt: extremely rare

Submediterranean belt: extremely 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

Index Fungorum GBIF

Pier Luigi Nimis - CC BY-SA 4.0

TSB 24284bis

Pier Luigi Nimis - CC BY-SA 4.0

TSB 24284bis

Curtis Randall Björk – CC BY-SA 4.0

British Columbia, Clearwater Valley Date: 2015-09-08 On rock at river shore
as Lempholemma intricatum