Placidium rufescens (Ach.) A. Massal.
Sched. Crit., 6: 114, 1856. Basionym: Endocarpon rufescens Ach. - Lichenogr. Univ.: 304, 1810.
Synonyms: Catapyrenium lachneum subsp. rufescens (Ach.) Clauzade & Cl. Roux; Catapyrenium rufescens (Ach.) Breuss; Dermatocarpon rufescens (Ach.) Th. Fr.; Dermatocarpon rufopallens (Nyl.) Zahlbr.; Dermatocarpon terrigenum Tomin; Endocarpon rufopallens Nyl.; Endopyrenium rufescens (Ach.) Körb.; Endopyrenium rufopallens (Nyl.) Müll. Arg.
Description: Thallus squamulose to subfoliose, reddish brown, dull to somewhat shiny, the squamules large, to 15 mm wide, 0.3-0.6 mm thick, rounded at tips, with a mostly up-turned, undulate margin bearing black, knotty pycnidia; lower surface pale to dark brown, often blackening in central parts, attached by colourless, (5.5-)6-7.5(-8) μm thick rhizohyphae which are absent in marginal parts. Upper cortex paraplectenchymatous, 40-80 μm thick, with an epinecral layer of variable thickness; medulla prosoplectenchymatous, of 3-5 μm thick, elongated cells; lower cortex clearly delimited from the medulla, 38-138 μm thick, of irregularly arranged, 8-23 μm wide, rounded to angular cells. Perithecia frequent, laminal, broadly pyriform, immersed in the squamules, up to 0.5 mm across, without involucrellum. Exciple pale throughout; paraphyses absent, substituted by periphyses measuring 40-60 x 3.5-5 μm. Asci 8-spored, cylindrical, thin-walled, non-amyloid and without an ocular chamber, with uniseriately arranged spores, 80-100 x 12-17(-21) μm. Ascospores 1-celled, hyaline, thin-walled, ellipsoid, (14-)15-20(-22) x (6-)7-10(-11) μm. Pycnidia multilocular, Dermatocarpon-type, marginal, usually abundant, prominent and knob-like, black. Conidia oblong-ellipsoid to subcylindrical, 3-5 x 1.3-2.3 μm. Photobiont chlorococcoid. Spot tests: cortex and medulla K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Growth form: Squamulose
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
On otherwise dry surfaces with short periods of water seepage after rain
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: absent
Montane belt: very rare
Dry submediterranean belt: rather rare
Humid submediterranean belt: rare
Padanian area: absent
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
A. Moro; Owner: Department of Life Sciences, University of Trieste
Sicilia, TP, Segesta, presso i templi
2008.04.05
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (32334)
2001/12/08
A. Moro; Owner: Department of Life Sciences, University of Trieste
Sicilia, TP, Segesta, presso i templi
2008.04.05
A. Moro; Owner: Department of Life Sciences, University of Trieste
Sicilia, TP, Segesta, presso i templi
2008.04.05
Andrea Moro; Owner: Department of Life Sciences, University of Triedte
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino
20/02/2017
Andrea Moro; Owner: Department of Life Sciences, University of Triedte
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino
20/02/2017
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P/Placidium_rufescens.htm
France, session AFL 2010 - Hérault
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P/Placidium_rufescens.htm
France, session AFL 2010 - Hérault
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P/Placidium_rufescens.htm
France, session AFL 2015 - Lot
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P/Placidium_rufescens.htm
France, session AFL 2015 - Lot
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P/Placidium_rufescens.htm
France, session AFL 2015 - Lot
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P/Placidium_rufescens.htm
France, session AFL 2015 - Lot
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P/Placidium_rufescens.htm
France, session AFL 2015 - Lot
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P/Placidium_rufescens.htm
France, session AFL 2015 - Lot
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P/Placidium_rufescens.htm
France, session AFL 2015 - Lot
Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1123&lang=en
France, Provence, Gambois
Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1123&lang=en
France, Provence, Gambois
Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1123&lang=en
France, Provence, Gambois
Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1123&lang=en
France, Provence, Gambois
Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1123&lang=en
France, Provence, Gambois
Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1123&lang=en
France, Provence, Gambois
Naira Sargsyan - Institute of Botany A. Takhtajyan, Yerevan CC BY-SA 4.0
Armenia
Collezione lichenologica Abramo Massalongo del Museo di Storia Naturale G. Ligabue di Venezia - Autori: Seggi, Linda; Trabucco, Raffaella Proprietà: Fondazione Musei Civici di Venezia - CC BY-NC
Italy, Veneto, in Baldo Monte 1855
Collezione lichenologica Abramo Massalongo del Museo di Storia Naturale G. Ligabue di Venezia - Autori: Seggi, Linda; Trabucco, Raffaella Proprietà: Fondazione Musei Civici di Venezia - CC BY-NC
Italy, Veneto, in Baldo Monte 1855
Growth form: Squamulose
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
On otherwise dry surfaces with short periods of water seepage after rain
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: absent
Montane belt: very rare
Dry submediterranean belt: rather rare
Humid submediterranean belt: rare
Padanian area: absent
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
A. Moro; Owner: Department of Life Sciences, University of Trieste
Sicilia, TP, Segesta, presso i templi
2008.04.05
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (32334)
2001/12/08
A. Moro; Owner: Department of Life Sciences, University of Trieste
Sicilia, TP, Segesta, presso i templi
2008.04.05
A. Moro; Owner: Department of Life Sciences, University of Trieste
Sicilia, TP, Segesta, presso i templi
2008.04.05
Andrea Moro; Owner: Department of Life Sciences, University of Triedte
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino
20/02/2017
Andrea Moro; Owner: Department of Life Sciences, University of Triedte
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino
20/02/2017
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P/Placidium_rufescens.htm
France, session AFL 2010 - Hérault
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P/Placidium_rufescens.htm
France, session AFL 2010 - Hérault
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P/Placidium_rufescens.htm
France, session AFL 2015 - Lot
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P/Placidium_rufescens.htm
France, session AFL 2015 - Lot
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P/Placidium_rufescens.htm
France, session AFL 2015 - Lot
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P/Placidium_rufescens.htm
France, session AFL 2015 - Lot
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P/Placidium_rufescens.htm
France, session AFL 2015 - Lot
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P/Placidium_rufescens.htm
France, session AFL 2015 - Lot
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P/Placidium_rufescens.htm
France, session AFL 2015 - Lot
Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1123&lang=en
France, Provence, Gambois
Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1123&lang=en
France, Provence, Gambois
Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1123&lang=en
France, Provence, Gambois
Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1123&lang=en
France, Provence, Gambois
Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1123&lang=en
France, Provence, Gambois
Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1123&lang=en
France, Provence, Gambois
Naira Sargsyan - Institute of Botany A. Takhtajyan, Yerevan CC BY-SA 4.0
Armenia
Collezione lichenologica Abramo Massalongo del Museo di Storia Naturale G. Ligabue di Venezia - Autori: Seggi, Linda; Trabucco, Raffaella Proprietà: Fondazione Musei Civici di Venezia - CC BY-NC
Italy, Veneto, in Baldo Monte 1855
