 The lectotype (reference specimen) was established by Stearn in 1983.The species epithet reflects the flower formation as an umbel.The plant's many common names include garden star-of-Bethlehem, sleepydick, nap-at-noon, grass lily, summer snowflake, snowdrop, starflower, bird's milk, chinkerichee, ten-o'clock lady, eleven-o'clock lady, Bath asparagus, and star of Hungary.