- any of various plants, especially of the genera Ipomoea and Convolvulus, as I. purpurea, a twining plant having cordate leaves and funnel-shaped flowers of various colors, often opening only in the morning.
- a racehorse that runs faster in morning workouts than in afternoon races.
- any of various mainly tropical convolvulaceous plants of the genus Ipomoea and related genera, with trumpet-shaped blue, pink, or white flowers, which close in late afternoon
