Lepraria diffusa (J.R. Laundon) Kukwa

Ann. Bot. Fenn., 39: 226, 2002. Basionym: Leproloma diffusum J.R. Laundon - Lichenologist, 21: 16, 1989.
Distribution: N - Frl (Baruffo & al. 2006), Ven (Baruffo & al. 2006, Thor & Nascimbene 2007), TAA (Nascimbene 2005, Baruffo & al. 2006, Bilovitz & al. 2014), Lomb (Ravera & al. 2018b), Piem (Baruffo & al. 2006), Emil (Baruffo & al. 2006, Fariselli & al. 2020), Lig (Baruffo & al. 2006). C - Tosc (Baruffo & al. 2006), Abr (Baruffo & al. 2006), Sar (Zedda 2000a, 2002, 2002b). S - Cal (Baruffo & al. 2006), Si.
Description: Thallus leprose, consisting of a soft mass of soredia-like granules, whitish to usually cream-coloured, sometimes clearly yellowish, usually poorly delimited, always without lobes and without a raised edge. Granules coarse, (80-)100-200(-280) μm in diam., sometimes with short projecting hyphae. Medulla white, very poorly developed to absent. Photobiont chlorococcoid. Spot tests: K- or K+ yellow slowly turning dirty orange, C- or C+ dirty orange, KC- or KC+ yellow to dirty orange, P+ yellow-orange to brownish red, UV-. Chemistry: 4-oxypannaric acid 2- methylester (major), 4-oxypannaric acid (minor to trace), pannaric acid methylester, pannaric acid 2-methylester, pannaric acid and other dibenzofurans (traces).
Note: in niches and fissures of calcareous or dolomitic boulders, but also on soil, mosses and plant debris in dry grasslands, mostly on surfaces sheltered from rain; probably occurring throughout the country.
Growth form: Leprose
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: very rare
Oromediterranean belt: absent
Montane belt: rare
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: rather rare
Humid mediterranean belt: 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 32770

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (32770)

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (32770)