* Asexual conceptacles.These develop where weakly calcified cells break down to produce a cavity. In L. incrustans, Their columella is central and obvious (see above); it is accentuated by the spores (which may be bispores, tetraspores, etc.), which squeeze against the columella and conceptacle walls. Asexual conceptacles may be uniporate or multiporate.

* Sexual (male / female) conceptacles.These lack a columella. L. incrustans has distinct male and female plants; the two conceptacle types never co-occur on the same thallus. Male