Lendemeriella exsecuta (Nyl.) S. Y. Kondr.

Lendemeriella exsecuta (Nyl.) S. Y. Kondr.

in Kondratyuk & al., Acta Bot. Hung., 62, 1-2: 121, 2020. Basionym: Lecanora exsecuta Nyl. - Flora, 63: 388, 1880.

Synonyms: Blastenia exsecuta (Nyl.) Servít; Caloplaca exsecuta (Nyl.) Dalla Torre & Sarnth.

Distribution: N - Frl (Tretiach & Hafellner 2000), TAA (Nascimbene & al. 2022), Piem, VA (Isocrono & al. 2008, Favero-Longo & Piervittori 2009).

Description: Thallus crustose, thinly episubstratic, continuous to rimose-areolate, grey, rarely dark grey or dirty white, the areoles 0.5-1 mm wide, sometimes constricted at base. Apothecia biatorine or lecideine, 0.2-0.7 mm across, sessile, not constricted at base, with a flat to convex disc of variable colour, from brownish yellow to orange-brown or finally entirely black (the yellow to orange pigment appearing as a pruina), and a persistent to finally excluded, black to olive, smooth proper margin. Proper exciple broad, prosoplectenchymatous, the outer part blackish green, K-, N+ purple-red; epithecium yellowish orange, K+ red; hymenium colourless, 65-90(-135) μm high; paraphyses sparingly branched in upper part, the terminal cells swollen, 1.5-4 μm wide; hypothecium yellowish to brownish, 50-125 μm high. Asci 8-spored, cylindrical-clavate, functionally unitunicate, apically thickened with a broad internal beak, the inner part of apex and external cap I+ blue, Teloschistes-type. Ascospores 2-celled, polarilocular, hyaline, ellipsoid, (10-)12-16.5 x (5.5-)6-7.5(-8) μm, the equatorial thickening (“septum”) 3-5(-7) μm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-; apothecia K- or K+ red, C-. Chemistry: Cinereorufa-green pigment in thallus and apothecial margin; apothecia with 7-chloroemodin, emodin, fallacinal, fragilin, parietin, parietinic acid, teloschistin and an unknown substance.

Note: a mainly arctic-alpine, probably circumpolar lichen of basic siliceous rocks in humid, wind-protected situations above and near treeline; certainly much more widespread in the Alps.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: very rare

Subalpine belt: extremely 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

Herbarium samples

Felix Schumm - CC BY-SA 4.0

[BR5030035907178], Norway, Svalbard, Longgyrenhyen, inland. Leg. N. Gunde-Zimerman (II-6), June-August 2001, det. A. Aptroot, 2002

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (21132)
2001/11/13

Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php (Courtesy: Anita Stridvall)

Felix Schumm - CC BY-SA 4.0

[BR5030035907178], Norway, Svalbard, Longgyrenhyen, inland. Leg. N. Gunde-Zimerman (II-6), June-August 2001, det. A. Aptroot, 2002

Felix Schumm - CC BY-SA 4.0

[BR5030035907178], Norway, Svalbard, Longgyrenhyen, inland. Leg. N. Gunde-Zimerman (II-6), June-August 2001, det. A. Aptroot, 2002

Felix Schumm - CC BY-SA 4.0

[BR5030035907178], Norway, Svalbard, Longgyrenhyen, inland. Leg. N. Gunde-Zimerman (II-6), June-August 2001, det. A. Aptroot, 2002

Felix Schumm - CC BY-SA 4.0

[BR5030035907178], Norway, Svalbard, Longgyrenhyen, inland. Leg. N. Gunde-Zimerman (II-6), June-August 2001, det. A. Aptroot, 2002

Felix Schumm - CC BY-SA 4.0

[BR5030035907178], Norway, Svalbard, Longgyrenhyen, inland. Leg. N. Gunde-Zimerman (II-6), June-August 2001, det. A. Aptroot, 2002

Felix Schumm - CC BY-SA 4.0

[BR5030035907178], Norway, Svalbard, Longgyrenhyen, inland. Leg. N. Gunde-Zimerman (II-6), June-August 2001, det. A. Aptroot, 2002

Felix Schumm - CC BY-SA 4.0

[BR5030035907178], Norway, Svalbard, Longgyrenhyen, inland. Leg. N. Gunde-Zimerman (II-6), June-August 2001, det. A. Aptroot, 2002

Felix Schumm - CC BY-SA 4.0

[BR5030035907178], Norway, Svalbard, Longgyrenhyen, inland. Leg. N. Gunde-Zimerman (II-6), June-August 2001, det. A. Aptroot, 2002

Felix Schumm - CC BY-SA 4.0

[BR5030035907178], Norway, Svalbard, Longgyrenhyen, inland. Leg. N. Gunde-Zimerman (II-6), June-August 2001, det. A. Aptroot, 2002

Felix Schumm - CC BY-SA 4.0

[BR5030035907178], Norway, Svalbard, Longgyrenhyen, inland. Leg. N. Gunde-Zimerman (II-6), June-August 2001, det. A. Aptroot, 2002

Felix Schumm - CC BY-SA 4.0

[BR5030035907178], Norway, Svalbard, Longgyrenhyen, inland. Leg. N. Gunde-Zimerman (II-6), June-August 2001, det. A. Aptroot, 2002

Felix Schumm - CC BY-SA 4.0

[BR5030035907178], Norway, Svalbard, Longgyrenhyen, inland. Leg. N. Gunde-Zimerman (II-6), June-August 2001, det. A. Aptroot, 2002

real
time web analytics