Julella myrticola (B. de Lesd.) M.E. Barr

in Egea, Bocconea, 6: 54, 1996. Basionym: Polyblastiopsis myrticola B. de Lesd. - Bull. Soc. bot. Fr., 70: 848, 1923.
Distribution: C - Tosc. S - Si (TSB 15767).
Description: Thallus crustose, non-lichenized, mostly endosubstratic, continuous, appearing as a whitish fleck. Perithecia black, 0.2-0.35(-0.45) mm across, covered by a grey, thin thalline layer in the basal part, naked in the apical part. Involucrellum brown-black, dimidiate, adhering to exciple; exciple brown-black in upper part, paler in lower part, N-, K+ greenish brown; hamathecium of persistent pseudoparaphyses, which appear moderately branched and anastomosing in lactophenol cotton blue, but almost simple in water. Asci 8-spored, cylindrical-clavate, thick-walled, the inner wall thickened towards apices, with a shallow, broad ocular chamber. Ascospores muriform, hyaline, ellipsoid, 22-35(-54) x 11-14.5(-22) µm, surrounded by an epispore well visible in K. Photobiont absent. Spot tests: thallus K-, C-, KC-, UV-. Chemistry: without lichen substances.
Note: on the bark of evergreen Mediterranean shrubs, especially Myrtus. Poorly known, perhaps overlooked in Mediterranean Italy.
Growth form: Fungus
Substrata: bark
Reproductive strategy: mainly sexual
Pioneer species
Poorly known taxon in need of further study

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: very rare
Dry mediterranean belt: absent

pH of the substrata:


Solar irradiation:








Altitudinal distribution:


Predictive model
Herbarium samples

P.L. Nimis CC BY-SA 4.0
TSB 10446

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (10446)