Solenopsora lichens produce
thalli of various
morphologies, including
crust-like (crustose), scaley (squamulose), and
leafy (foliose). Depending on the species, the
apothecia may be immersed on the substrate, emergent on the substrate surface, or somewhat elevated on a stalk (
stipitate). A combination of microscopic characteristics define the genus
Solenopsora. They all have
asci that contain eight spores, and are of the
Catillaria-type. This means that they have a prominent,
amyloid tholus (the thickened inner part of the tip of an ascus) that lacks any internal differentiation such as an axial body. They have simple (i.e. unbranched)
paraphyses with an internal brown
pigmentation and club-shaped tips. Their
ascospores are colourless and translucent (
hyaline), and contain a single
septum.
Catillaria is a closely related genus that differs mainly in having a thallus that is always crustose, and apothecia with a proper margin. ==Habitat and distribution==