Amandinea pelidna (Ach.) Fryday & Arcadia

Graphis Scripta, 24: 42, 2012. Basionym: Lecidea pelidna Ach. - Lichenogr. Univ. 158, 1810.
Synonyms: Amandinea lecideina (H. Mayrhofer & Poelt) Scheid. & H. Mayrhofer; Buellia litoralis Zahlbr.; Buellia myriocarpa f. litoralis Erichsen; Buellia prospersa (Nyl.) Riddle; Buellia punctata f. crassior (Erichsen) Zahlbr.; Lecidea prospersa Nyl.; Rinodina biatorina var. buellioides C.A. Berg non Rinodina buellioides Metzler; Rinodina lecideina H. Mayrhofer & Poelt
Distribution: N - TAA (M-0041700). C - Sar (Bungartz & al. 2004, Neuwirth 2018).
Description: Thallus crustose, episubstratic, rimose, whitish to pale brown, sometimes delimited by a dark prothallus. Medulla white, I-. Apothecia lecideine, black, 0.3-0.6 mm across, sessile, with a flat disc and a thin, persistent proper margin. Proper exciple thin, aethalea-type, the inner hyphae hyaline, prosoplectenchymatous, the outer hyphae parallel and usually strongly brown-pigmented, N-; epithecium brown, N-; hymenium colourless, not inspersed with oil droplets, 70-90 μm wide; paraphyses c. 1.5 μm thick at mid-level, the apical cells swollen, up to 5 μm wide; hypothecium dark brown. Asci 8-spored, clavate, Bacidia-type. Ascospores 1-septate, brown, 10-15 x 6.5-8.5 μm, the wall minutely microrugulate, with a median thickening corresponding to the septum, at first Physconia-type, then Buellia-type. Conidia thread-like, curved, 15-35 × c. 1 μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: a widespread species of siliceous rocks and pebbles in open habitats. For further details see Bungartz & al. (2004).
Growth form: Crustose
Substrata: rocks
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)
Taxon bound to maritime-coastal situations

Commonnes-rarity: (info)

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

pH of the substrata:


Solar irradiation:








Altitudinal distribution:


Predictive model
Herbarium samples

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