Species in
Kaernefia have a poorly developed, indistinct
thallus comprising tiny granules or granule-like
isidia. It ranges in colour from yellow, to orange to greenish orange or brownish orange. It produces
lecanorine apothecia with a thick margin.
Lichen products reported from the genus include
parietin and
O-methylvioxanthin as major compounds, and trace amounts of
fallacinal,
teloschistin and
atranorin. ==Species==