Cladonia floerkeana (Fr.) Flörke
Comm. Clad.: 99, 1828. Basionym: Cenomyce floerkeana Fr. - Sched. Crit. Lich. Suec., 1-4: 18, 1825.
Synonyms: Cladonia berghsonii Asperges; Cladonia floerkeana var. chloroides (Flörke) Vain.; Cladonia macilenta subsp. floerkeana (Fr.) V. Wirth; Cladonia macilenta var. corticata Vain.
Distribution: N - Frl (TSB 832), TAA (Caniglia & al. 2002, Nascimbene & al. 2006e, 2007b, Lang 2009, Nimis & al. 2015), Lomb (Rivellini 1994, Rivellini & Valcuvia 1996, Nascimbene 2006, Gheza 2018, 2019, Gheza & al. 2022), Piem (Isocrono & al. 2004, 2006), VA (Matteucci & al. 2008, Isocrono & al. 2008). C - Tosc (Benesperi & al. 2007, Chiarucci & al. 2008), Sar (Burgaz & al. 2020).
Description: Primary thallus squamulose, persistent, the squamules ascending, scattered or forming small mats, small to middle-sized, up to 3 mm long, 1-2 mm wide, crenate or slightly lobed, olivaceous green to brownish green above, white beneath, sometimes with pale orange patches near the attachment point. Podetia brownish grey to greenish grey, subcylindrical to bacilliform, 1-10 mm tall (rarely more, up to 40 mm), 0.5-1 mm thick, simple or sparingly branched in upper part, corticate or rarely ecorticate in upper part, the cortex variable, from smooth and unbroken to areolate, sometimes squamulose or granulose, the granules simulating very coarse soredia. Apothecia frequent, scarlet red, terminal, often forming conspicuous clusters. Asci 8-spored, clavate, thickened at apex, with a K/I+ blue tholus and a K/I+ strongly blue outer gelatinous sheath, Cladonia-type. Ascospores 1-celled, hyaline, ellipsoid. Pycnidia scarlet red, distinctly stalked, most common on the primary squamules, rarer on podetia, with a red jelly. Conidia hyaline, curved. Photobiont chlorococcoid. Spot tests: K- or rarely K+ yellow, C-, KC-, P- or rarely P+ yellow, UV- (rarely UV+ bluish). Chemistry: the most common chemotype has barbatic and didymic acids, a rarer chemotype with thamnolic and didymic acid has been also reported from Northern Europe; rhodocladonic acid in apothecia and pycnidia.Note: a circumboreal-montane species found on organic soil and peat, but also on sand, more rarely on lignum or at the base of trunks, with optimum in the subalpine belt of the Alps.
Growth form: Fruticose
Substrata: lignum, soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: very rare
Subalpine belt: rare
Oromediterranean belt: extremely rare
Montane belt: extremely rare
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent

Predictive model
Herbarium samples

Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Central Europe; Germany: Brandenburg.


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (33799)
2003/02/15
apothecia


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (33799)
2003/02/15

Courtesy: Olivier et Danièle Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_C/Textes_C/Cladonia_floerkeana.htm
France, Session AFL 2001 - Haute-Savoie
6/10/2015

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=484&lang=en
France, Ardennes

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=484&lang=en
France, Ardennes

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=484&lang=en
France, St. Herbot

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=484&lang=en
France, Lac Drennec

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=484&lang=en
France, Lac Drennec

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=484&lang=en
France, Lac Drennec

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=484&lang=en
France, Lac Drennec

Joël Querellou - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=484&lang=en
France, Lac Drennec

Gabriele Gheza - https://lichenidilombardia.home.blog
Italy, Lombardia, Bergamo, Vilminore di Scalve, 1530 m
30/04/2018

Joël Querellou - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=484&lang=en
France, Lac Drennec

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=484&lang=en
France, Pointe de Dinan

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=484&lang=en
France, Pointe de Dinan
Growth form: Fruticose
Substrata: lignum, soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: very rare
Subalpine belt: rare
Oromediterranean belt: extremely rare
Montane belt: extremely rare
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent

Predictive model
Herbarium samples |

Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Central Europe; Germany: Brandenburg.


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (33799)
2003/02/15
apothecia


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (33799)
2003/02/15

Courtesy: Olivier et Danièle Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_C/Textes_C/Cladonia_floerkeana.htm
France, Session AFL 2001 - Haute-Savoie
6/10/2015

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=484&lang=en
France, Ardennes

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=484&lang=en
France, Ardennes

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=484&lang=en
France, St. Herbot

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=484&lang=en
France, Lac Drennec

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=484&lang=en
France, Lac Drennec

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=484&lang=en
France, Lac Drennec

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=484&lang=en
France, Lac Drennec

Joël Querellou - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=484&lang=en
France, Lac Drennec

Gabriele Gheza - https://lichenidilombardia.home.blog
Italy, Lombardia, Bergamo, Vilminore di Scalve, 1530 m
30/04/2018

Joël Querellou - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=484&lang=en
France, Lac Drennec

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=484&lang=en
France, Pointe de Dinan
