One of California's rarest plants, the "Tiburon mariposa lily" is known
only from the Ring Mountain site. In early June the Ring Mountain
is found well camouflaged in the serpentine rock outcrops and has long
shiny, bronze leaves and yellow-green bowl shaped flowers. Close inspection
reveals each petal to be strewn with fine hairs and a depressed, naked
gland located on the lower part.
Members of the species, Calochortus, like many other members
of the Lily Family, grow from bulbs, have flower parts in 3's and grass-like
leaves. There are about sixty species, many of them rare, which grow solely
in western North America. The name "Calochortus" comes from the Greek word
for beautiful grass.