Hammond's yellow spring beauty, "Claytonia virginica" var. A post office operated in Claytonia from 1914 to 1918. Probably its closest relative is Claytonia virginica. A comprehensive scientific study of "Claytonia" was published in 2006. The Stewarton Flower or pink purslane (Claytonia sibirica) is common in wetter areas. "Claytonia caroliniana" is a flowering, woodland perennial herb. The railway operated a gravel pit in Claytonia, with the gravel used for track construction. Claytonia was named for an early resident. "Claytonia virginica" and "Osmunda claytoniana". Claytonia caroliniana, the Carolina springbeauty, is an herbaceous perennial in the family Montiaceae. Indian potatoes ("Claytonia lanceolata"), and breadroot ("Lomatium canbyi"). Its typical associates include spring beauty ("Claytonia virginica") and cut-leaf tooth wort ("Cardamine laciniata"). Carolina springbeauty ("Claytonia caroliniana") and trout-lily ("Erythronium americanum") bloom in the hardwood forest every year. Claytonia was a station along the "Homedale, Idaho" branch of the Union Pacific Railroad. Associated plant species include "Claytonia megarhiza", "Kobresia" sp., "Oxyria digyna", and "Silene acaulis".