Heppia despreauxii (Mont.) Tuck.
Gen. Lich.: 46, 1872. Basionym: Solorina despreauxii Mont. - Hist. Nat. Isl. Canar., 3: 104, 1840.
Synonyms: Heppia gigantea Egea & Llimona; Heppia paulina Marton; Psora lobatoplicata B. de Lesd.
Distribution: N - Lig. S - Si (Grillo & Caniglia 2005).
Description: Thallus squamulose, heteromerous, 340-400 µm thick, ochraceous brown, with pale punctiform depressions in a reticulate pattern. Squamules subpeltate, 2.5-7 mm wide, at first flat, then concave, contiguous, with rounded ends and a down-turned edges, attached by a mat of 10-14 µm thick, colourless rhizohyphae, forming 1.4-2.7(-5) cm wide, convex rosettes. Upper cortex paraplectenchymatous, (25-)50-75 µm thick, covered with a 10-15 µm thick epinecral layer; medulla poorly developed, of anticlinally arranged hyphae; lower cortex absent or restricted to the margins. Apothecia without a thalline margin, semi-immersed in the squamules, 0.5-1.5(-2) mm across, with a dark reddish brown, concave disc, and a thin to indistinct proper margin. Proper exciple very thin, colourless; epithecium brownish, K-; hymenium colourless, 120-180 µm high, I+ blue slowly turning reddish; paraphyses simple, lax, 4-6 µm thick at base, the apical cells 8-10 µm wide; hypothecium colourless, I+ blue. Asci 8-spored, thin-walled, narrowly clavate to subcylindrical, prototunicate. Ascospores 1-celled, hyaline, ellipsoid, thin-walled, (18-)20-29(-31) x (7-)9-12 µm. Pycnidia dark, immersed. Conidia fusiform. Photobiont cyanobacterial, Scytonema-like. Spot tests: all negative. Chemistry: without lichen substances.
Note: the Ligurian record is the northernmost known for this Mediterranean-Macaronesian lichen growing on clay soil in dry, open grasslands. According to Timdal (in litt.) Psora lobatoplicata is a likely synonym of this species.
Growth form: Squamulose
Substrata: soil, terricolous mosses, and plant debris
Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)
Reproductive strategy: mainly sexual
Subcontinental: restricted to areas with a dry-subcontinental climate (e.g. dry Alpine valleys, parts of Mediterranean Italy)
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: absent
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: rare
Dry mediterranean belt: very rare
Predictive model
Manuel Gil
Spain, Canary Islands, Lanzarote
Manuel Gil
Spain, Canary Islands, Lanzarote
Manuel Gil
Spain, Canary Islands, Lanzarote
Manuel Gil
Spain, Canary Islands, Lanzarote
Felix Schumm - CC BY-SA 3.0
[ABL77805], Brazil, Mato Grosso do Sul, Bodoquena, Dente de Cão
summit,in Atlantic rain forest on exposed limestone. 20°47’´05'' S,
56°45’03'' W, 450 m. Leg. A. Aptroot (no 77805), 7.11.2018, det. A.
Aptroot, 2019
Growth form: Squamulose
Substrata: soil, terricolous mosses, and plant debris
Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)
Reproductive strategy: mainly sexual
Subcontinental: restricted to areas with a dry-subcontinental climate (e.g. dry Alpine valleys, parts of Mediterranean Italy)
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: absent
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: rare
Dry mediterranean belt: very rare
Predictive model
Index Fungorum
GBIF
Manuel Gil
Spain, Canary Islands, Lanzarote
Manuel Gil
Spain, Canary Islands, Lanzarote
Manuel Gil
Spain, Canary Islands, Lanzarote
Manuel Gil
Spain, Canary Islands, Lanzarote
