''Lithophragma'' is a genus of flowering plants in the

saxifrage family Saxifragaceae is a family of herbaceous perennial flowering plants, within the core eudicot order Saxifragales. The taxonomy of the family has been greatly revised and the scope much reduced in the era of molecular phylogenetic analysis. The fa ...

containing about nine species native to western North America. These plants are known generally as woodland stars. The petals of the flowers are usually bright white with deep, long lobes or teeth. Each petal may look like three to five petals, when at closer inspection the lobes fuse into a single petal at its base. Most species reproduce via bulblets instead of seeds. ''L. maximum'' is a federally listed endangered species. ''Lithophragma'' specifically coevolved with moths of the genus ''

Greya ''Greya'' is a genus of moths of the family Prodoxidae The Prodoxidae are a family of moths, generally small in size and nondescript in appearance. They include species of moderate pest status, such as the currant shoot borer, and others of ...

'', who pollinate and only lay eggs on ''Lithophragma'' plants.

Species

There are 9 species. The

Flora of North America North of Mexico The ''Flora of North America North of Mexico'' (usually referred to as ''FNA'') is a multivolume work describing the native plants and naturalized plants of North America, including the United States, Canada, St. Pierre and Miquelon, and Greenlan ...

counts 10 species, elevating ''L. parviflorum'' var. ''trifoliatum'' to species status, but the

Jepson Manual ''The Jepson Manual'' is a flora of the vascular plants that are either native to or naturalized in California. Botanists often refer to the book simply as ''Jepson''. It is produced by the University and Jepson Herbaria, of the University of Cali ...

considers it to be a variety of ''L. parviflorum'' restricted to California. *''

Lithophragma affine ''Lithophragma affine'' is a species of flowering plant in the saxifrage family known by the common name San Francisco woodland star. It is native to the coast of western North America from Oregon to Baja California, where it grows in open habit ...

'' - San Francisco woodland star *''

Lithophragma bolanderi ''Lithophragma bolanderi'' is a species of flowering plant in the saxifrage family known by the common name Bolander's woodland star. It is endemic to California, where it is known from several mountain ranges, including the North Coast Ranges, ...

'' - Bolander's woodland star *''

Lithophragma campanulatum ''Lithophragma campanulatum'' is a species of flowering plant in the saxifrage family known by the common name Siskiyou Mountain woodland star. It is native to southern Oregon and northern California, where it grows in the forests and woods of t ...

'' - Siskiyou Mountain woodland star *''

Lithophragma cymbalaria ''Lithophragma cymbalaria'' is a species of flowering plant in the saxifrage family known by the common name mission woodland star. It is endemic to California, where it is known from moist, shady habitat in the California Coast Ranges and cany ...

'' - mission woodland star *''

Lithophragma glabrum ''Lithophragma glabrum'' is a slender perennial western North American mountain plant in the Saxifrage family (Saxifragaceae), known by the common names bulbous woodland star, bulbiferous prairie-star, smooth woodland star, and smooth rockstar.Si ...

'' - bulbous woodland star *''

Lithophragma heterophyllum ''Lithophragma heterophyllum'', commonly known as hillside woodland star, is a species of flowering plant in the saxifrage family found in the western United States. It is native to the coastal mountain ranges of California, where it can genera ...

'' - hillside woodland star *''

Lithophragma maximum ''Lithophragma maximum'', known by the common name San Clemente Island woodland star, is a rare species of flowering plant in the saxifrage family. It is endemic to San Clemente Island, one of the eight Channel Islands of California. It is known ...

'' - San Clemente Island woodland star *''

Lithophragma parviflorum ''Lithophragma parviflorum'' is a species of flowering plant in the saxifrage family known by the common name smallflower woodland star. It is native to much of western North America from British Columbia to California to South Dakota and Nebras ...

'' - smallflower woodland star *''

Lithophragma tenellum ''Lithophragma tenellum'' is a species of flowering plant in the saxifrage family known by the common name slender woodland star. It is native to much of western North America from British Columbia to California to New Mexico, where it grows in ...

'' - slender woodland star

References

External links

Jepson Manual Treatment
Saxifragaceae genera {{Saxifragaceae-stub