(Nutt.) Torr. & Gray
~12, see text
Lithophragma is a genus of flowering plants 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.
There are 9 species. The Flora of North America North of Mexico counts 10 species, elevating L. parviflorum var. trifoliatum to species status, but the Jepson Manual considers it to be a variety of L. parviflorum restricted to California.
- Lithophragma affine - San Francisco woodland star
- Lithophragma bolanderi - Bolander's woodland star
- Lithophragma campanulatum - Siskiyou Mountain woodland star
- Lithophragma cymbalaria - mission woodland star
- Lithophragma glabrum - bulbous woodland star
- Lithophragma heterophyllum - hillside woodland star
- Lithophragma maximum - San Clemente Island woodland star
- Lithophragma parviflorum - smallflower woodland star
- Lithophragma tenellum - slender woodland star
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