Calochortus tiburonensis

One of California's rarest plants, the "Tiburon mariposa lily" is known only from the Ring Mountain site. In early June the Ring Mountain Calchortus 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.

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