Ionaspis suaveolens (Fr.) Th. Fr.

Lichenogr. Scand., 1, 1: 273, 1871. Basionym: Gyalecta suaveolens Fr. - Syst. Orb. Veg., 1: 285, 1825, nom. cons.
Synonyms: Aspicilia chrysophana Körb.; Aspicilia suaveolens (Fr.) A. Massal.; Ionaspis chrysophana (Körb.) Stein; Ionaspis fuscoclavata Eitner; Lecanora chrysophana (Körb.) Nyl. ex Stizenb.
Distribution: N - TAA (Thor & Nascimbene 2007), Lomb, Piem (Isocrono & al. 2004, Favero-Longo & al. 2015), Emil (Fariselli & al. 2020).
Description: Thallus crustose, episubstratic, thin, usually finely rimose-areolate, yellowish brown, usually darker and greenish around the apothecia, sometimes delimited by a dark prothallus. Apothecia 0.2-0.5 mm across, immersed in the thallus, with a concave, black disc turning green when wet, and a thin, sometimes slightly prominent margin. Epithecium bright blue-green, N-, the pigment dissolving in K; hymenium colourless, (50-)60-75 µm high; paraphyses mostly simple, submoniliform in upper part, not swollen at apex; hypothecium more or less colourless. Asci 8-spored, cylindrical-clavate, the outer wall K/I+ blue, but the inner walls and apical dome K/I-. Ascospores 1-celled, hyaline, subglobose to broadly ellipsoid, 6-11 x 5-7 µm. Photobiont trentepohlioid, the cells 10-18 µm wide. Spot tests: thallus K-, C-, KC-, P-. Chemistry: without lichen substances.
Note: on hard, compact, siliceous rocks in moist and rather shaded situations, mostly in upland areas. For the complicated nomenclatural history of this species see the (accepted) proposal by Lutzoni & Brodo (1994).
Growth form: Crustose
Substrata: rocks
Photobiont: Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

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

pH of the substrata:


Solar irradiation:








Altitudinal distribution:


Predictive model
Herbarium samples

S. Poumarat

S. Poumarat - Source: