-
ceratea Zopf.
produces olivetoric acid and
other physodic acids,
while var.
furfuracea produces physodic but not
olivetoric acid. Some
authors (e.g., Hale...
-
chemical properties of T. ciliaris
include the
presence of
olivetoric and
physodic acids in the medulla.
Chemical spot
tests for
these lichen products can...
- chemicals,
including four
depsidones (3-hydroxyphysodic, 4-O-methyl
physodic acid,
physodic and
physodalic acid), and two
depsides (atranorin and chloroatranorin)...
-
common characteristics are
relatively small spores and the
presence of
physodic acid and
related lichen products. The
lichens usually grow on the bark...
- Hypogymnia.
Other compounds present in the
lichen are
atranorin (upper cortex),
physodic acid, and di-O-methylphysodic acid. The
distribution of
Hypogymnia wilfiana...
-
species in the
genus produce atranorin in the cortex,
while lecanoric acid,
physodic acid, and
olivetoric acid
occur in the
medullae of some species. Pseudevernia...
- cartilage-like texture. The
lichen is
chemically distinct,
containing physodic acid and
virensic acid; the
latter substance is
otherwise unknown from...
- red to
orange colour is
produced as C is applied.
Alectoronic acid and
physodic acid
produce this colour,
while a
violet colour results when picrolichenic...
- and 1 μm in width. Chemically,
Hypogymnia amplexa contains atranorin and
physodic acid as
major and
constant components,
along with an
occasionally present...
-
related species by its
chemical composition,
containing atranorin and
physodic acid, and its
preference for
exposed Arctic–alpine
habitats with limited...
