Xanthoparmelia stenophylla (Ach.) Ahti & D. Hawksw.
Lichenologist, 37: 363, 2005. Basionym: Parmelia conspersa var. stenophylla Ach. - Meth. Lich.: 206, 1803.
Synonyms: Parmelia centrifuga var. stenophylla auct.; Parmelia conspersa f. convoluta Rabenh.; Parmelia conspersa var. heraultensis Gyeln.; Parmelia conspersa var. imbricata A. Massal.; Parmelia convoluta (Rabenh.) Gyeln.; Parmelia hypopallida Gyeln.; Parmelia imitans (Müll. Arg.) Gyeln.; Parmelia molliuscula auct. non Ach.; Parmelia somloënsis Gyeln.; Parmelia stenophylla (Ach.) Heugel; Parmelia taractica auct. non Kremp.; Xanthoparmelia somloënsis (Gyeln.) Hale; Xanthoparmelia taractica auct.
Description: Thallus foliose, heteromerous, dorsiventral, loosely attached, forming up to 20 cm wide patches. Lobes (0.5-)2-3(-5) mm broad, flattened, isotomic-dichotomously branched, more or less imbricate, the upper surface yellowish green, white-maculate, the lower surface tan at margins, pale brown in central parts, with pale, mostly simple rhizines which are sparse at margin. Upper cortex paraplectenchymatous, with a pored epicortex, the cell walls with Xanthoparmelia-type lichenan; medulla white; lower cortex paraplectenchymatous. Apothecia frequent, lecanorine, strongly constricted at base, to 8(-15) mm across, with a brown, smooth disc and a smooth thalline margin. Epithecium brown; hymenium and hypothecium colourless; paraphyses simple; hypothecium colourless. Asci 8-spored, clavate, the K/I+ blue tholus penetrated by a faintly amyloid apical cushion with parallel or diverging flanks, the wall K/I-, surrounded by a K/I+ blue outer layer, Lecanora-type. Ascospores 1-celled, hyaline, ellipsoid, 8-11 x 4-6 µm. Pycnidia common, appearing as black dots on the upper surface. Conidia weakly dumbbel-shaped, 5-6 x c. 1 µm. Photobiont chlorococcoid. Spot tests: upper cortex K-, C-, KC+ yellow, P-; medulla K+ yellow turning red, C-, KC-, P+ orange-red. Chemistry: upper cortex with usnic acid; medulla with salazinic acid and traces of norstictic and protocetraric acids.
Growth form: Foliose, broad lobed
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: rare
Subalpine belt: rather rare
Montane belt: extremely rare
Dry submediterranean belt: very rare
Humid submediterranean belt: rather rare
Padanian area: extremely rare
pH of the substrata:
1 2 3 4 5
Solar irradiation:
1 2 3 4 5
Aridity:
1 2 3 4 5
Eutrophication:
1 2 3 4 5
Poleotolerance:
0 1 2 3
Altitudinal distribution:
1 2 3 4 5 6
Rarity
absent
extremely rare
very rare
rare
rather rare
rather common
common
very common
extremely common
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Occurrence data
Predictive map
Current prediction (1981-2010)
Future prediction (2071-2100) SSP 1-2.6
Future prediction (2071-2100) SSP 5-8.5Predictive maps according to Francesconi et al. 2025
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (6688)
2002/02/13

G. Incerti; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (29101)
2001/11/26

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=553&lang=en
Belgium, Monthermé

Felix Schumm – CC BY-SA 4.0
Image from: F. Schumm (2008) - Flechten Madeiras, der Kanaren und Azoren. Beck, OHG - ISBN: 978-3-00-023700-3

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (34441)
2002/01/14

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_X/Xanthoparmelia_stenophylla.htm
France, session AFL 2010 - Hérault

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_X/Xanthoparmelia_stenophylla.htm
France, session AFL 2010 - Hérault

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=553&lang=en
Belgium, Monthermé
Growth form: Foliose, broad lobed
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: rare
Subalpine belt: rather rare
Montane belt: extremely rare
Dry submediterranean belt: very rare
Humid submediterranean belt: rather rare
Padanian area: extremely rare
pH of the substrata:
1 | 2 | 3 | 4 | 5 |
Solar irradiation:
1 | 2 | 3 | 4 | 5 |
Aridity:
1 | 2 | 3 | 4 | 5 |
Eutrophication:
1 | 2 | 3 | 4 | 5 |
Poleotolerance:
0 | 1 | 2 | 3 |
Altitudinal distribution:
1 | 2 | 3 | 4 | 5 | 6 |
Rarity
absent
extremely rare
very rare
rare
rather rare
rather common
common
very common
extremely common
Loading data...
Occurrence data
Predictive map



Predictive maps according to Francesconi et al. 2025

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (6688)
2002/02/13

G. Incerti; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (29101)
2001/11/26

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=553&lang=en
Belgium, Monthermé

Felix Schumm – CC BY-SA 4.0
Image from: F. Schumm (2008) - Flechten Madeiras, der Kanaren und Azoren. Beck, OHG - ISBN: 978-3-00-023700-3

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (34441)
2002/01/14

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_X/Xanthoparmelia_stenophylla.htm
France, session AFL 2010 - Hérault

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_X/Xanthoparmelia_stenophylla.htm
France, session AFL 2010 - Hérault
