Question: Which plant has more species, Lithophragma or Adonis?
Context: 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. Lithophragma heterophyllum is a species of flowering plant in the saxifrage family known by the common name hillside woodland star.  It is native to the coastal mountain ranges of California, where it can generally be found in shady habitat.  It is a rhizomatous perennial herb growing erect or leaning with a slender naked flowering stem.  The leaves are located on the lower part of the stem, each divided into rounded lobes.  The stem bears 3 to 12 flowers, each in a cuplike calyx of red or green sepals.  The five petals are white, up to 1.2 centimeters long, and usually divided into about three pointed lobes. 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 Nebraska, where it grows in several types of open habitat.  It is a rhizomatous perennial herb growing erect or leaning with a naked flowering stem.  The leaves are mainly located low on the stem, each cut into three lobes or divided into three lobed leaflets.  The stem bears up to 14 flowers, each in a cuplike calyx of red or green sepals.  The five petals are bright white, up to 1.6 centimeters long, and usually divided into three toothlike lobes. 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, the foothills of the Sierra Nevada, and the San Gabriel Mountains.  It grows in many types of open habitat.  It is a rhizomatous perennial herb growing erect or leaning with a tall naked flowering stem.  The leaves are located on the lower part of the stem, each divided into rounded lobes.  The stem bears up to 25 flowers, each in a cuplike calyx of red or green sepals.  The five petals are white, under one centimeter long, and toothed or smooth along the edges. 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 from only about four kilometers of rocky coastal cliffs on the edge of the island.  The plant was thought to be extinct until a few specimens were rediscovered in 1979.  Only 200 individuals were tallied in a 1996 survey.  In 1997 the plant was listed as an endangered species on the federal level. Lithophragma tenellum is a species of flowering plant in the saxifrage family known by the common name slender woodland star. Lithophragma trifoliatum is a variety of flowering plant in the saxifrage family known from the western slope of the Cascade Range and Sierra Nevada in California.  It is sometimes considered its own species based on the pink, fragrant flowers, the shape of the hypanthium, and other characters.  Others consider it to be a sterile variety of "L. parviflorum" that likely now persists by vegetative reproduction. Lithophragma cymbalaria is a species of flowering plant in the saxifrage family known by the common name mission woodland star. 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 the mountains.  It is a rhizomatous perennial herb growing erect or leaning with a tall naked flowering stem.  The leaves are mostly located on the lower part of the stem, each divided into rounded lobes, sometimes narrowed into teeth.  The stem bears 2 to 11 flowers, each in a cuplike calyx of red or green sepals.  The five petals are white, under one centimeter long, and divided into irregular toothlike lobes. Adonis is a genus of about 20–30 species of flowering plants of the crowfoot family, Ranunculaceae, native to Europe and Asia.
Answer: Adonis