For 10 points, name this mutualistic composite organism.
For some reason, these organisms name a condition in which white spots cause scarring around female genitalia. The oldest fossil of this organism, Winfrenatia, probably existed before they could choose to reproduce either asexually via isidia or via spores called apothecia. The thallus of these organisms consists of four interlaced filaments underneath a cortex which may be porous in the case of some Parmeliacaea species. These organisms are classified as fruticose, foliose, or crustose depending on whether or not they have branched, leafy, or flat and painted growth forms. These organisms were largely a mystery until botanist Simon Schwendener proposed the "dual theory" that explained that they consist of a fungus and photosynthetic form. For 10 points, name this mutualistic composite organism.
For some reason, these organisms name a condition in which white spots cause scarring around female genitalia.
lichens