Lecanora strobilina (Spreng.) Kieff.

Bull. Soc. Hist. Nat. Metz: 74, 1895. Basionym: Parmelia strobilina Spreng. in Linnaeus - Syst. Veget., 4, 1: 300, 1827.
Synonyms: Lecanora conizaea auct. non (Ach.) Nyl.
Distribution: N - VG, Frl (Badin & Nimis 1996), TAA (UPS-L-166828), Lig (Putortì & al. 1999b, Giordani & Brunialti 2000, Giordani & al. 2002, Brunialti & Giordani 2003, Giordani 2006, Giordani & Incerti 2008). C - Tosc (Putortì & Loppi 1999, Baragatti & al. 2005, Baragatti 2006, Stofer 2006, Frati & al. 2008, Brunialti & Frati 2010, Loppi & Baragatti 2011, Brunialti & al. 2012b, Paoli & al. 2012, 2015d, Benesperi & al. 2013), Umb (Ravera & al. 2011), Laz (Ravera 2006c, 2008b, Stofer 2006), Mol (Ravera & Genovesi 2012), Sar (Rizzi & al. 2011). S - Camp (Brunialti & al. 2013, Ravera & Brunialti 2013, Suija & al. 2015), Si (Brackel 2008b).
Description: Thallus crustose, greenish to yellowish grey, dull, poorly developed or granular-warted (appearing sorediate but without true soredia), with ecorticate areoles often coalescing to form a scurfy or rimose crust, often covered with projecting,needle-like terpenoid crystals in the herbarium. Apothecia lecanorine, round or slightly irregular in outline, mostly densely crowded, sessile with a weakly constricted base, 0.3-0.4(-1) mm across, with a yellowish ochre to orange-brown, flat to slightly convex, rarely thinly white-pruinose disc, and a weakly prominent, persistent or finally excluded proper margin. Proper exciple ecorticate, 15-40 µm wide laterally, of loosely entangled hyphae with scattered groups of algae, filled with small brownish granules soluble in K and insoluble in N; epithecium colourless to pale greenish brown, with colourless granules soluble in K and insoluble in N; hymenium colourless to rarely pale yellow, (35-)40-50(-65) µm tall; paraphyses simple or weakly branched and anastomosing, the apical cells hardly swollen, 1-1.5 µm wide, without a brown cap; hypothecium colourless or pale yellow, with granular crystals. Asci 8-spored, clavate, very thin-walled, with a K/I+ blue, tall tholus penetrated by a faintly amyloid apical cushion, the wall K/I-, surrounded by a blue outer layer, Lecanora-type. Ascospores 1-celled, hyaline, narrowly ellipsoid, (7-)10-13(-16.5) x (3-)3.5-4(-6) µm. Photobiont chlorococcoid. Spot tests: thallus K- or K+ brownish yellowish, C- or C+ pale yellow, KC- of KC+ dirty yellow, P-, UV+ pale orange. Chemistry: chemotype 1: usnic acid, zeorin and decarboxysquamatic acid, chemotype 2) usnic acid, zeorin and barbatic acid, chemotype 3) usnic acid and zeorin only.
Note: a temperate species found on acid bark and lignum, mostly in open woodlands; previously confused with other species and probably more widespread in Tyrrhenian Italy.
Growth form: Crustose
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: extremely rare
Submediterranean belt: extremely rare
Padanian area: absent
Humid submediterranean belt: rare
Humid mediterranean belt: very rare
Dry mediterranean belt: absent

pH of the substrata:

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Solar irradiation:

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Aridity:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Predictive model
Herbarium samples

Ed Uebel - Wikimedia Commons - - CC BY-SA 2.0
rowing on bark of dead branch of Pinus thunbergiana in the M-NCPPC Lake Artemesia Park, Berwyn Heights, Prince George's County, Maryland, USA; collected by E.C. Uebel, identified by H. Thorsten Lumbsch, Department of Botany, Field Museum of Natural History, 1400 S. Lake Shore Dr., Chicago, IL (Specimen No. U-484C, 22 Oct 2004).


Ed Uebel - Wikimedia Commons - - CC BY-SA 2.0
rowing on bark of dead branch of Pinus thunbergiana in the M-NCPPC Lake Artemesia Park, Berwyn Heights, Prince George's County, Maryland, USA; collected by E.C. Uebel, identified by H. Thorsten Lumbsch, Department of Botany, Field Museum of Natural History, 1400 S. Lake Shore Dr., Chicago, IL (Specimen No. U-484C, 22 Oct 2004).



P.L. Nimis CC BY-SA 4.0
TSB 16601



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (16601)
2002/12/13