Diurnus
/dee-UR-nus/🏷️ Taxonomy●●● Advanced
Also known as: diurna, diurnum
A phenological epithet indicating the plant opens its flowers during daylight hours — as opposed to nocturnus (night-flowering). Day-flowering plants are typically pollinated by bees, butterflies, and other diurnal insects. Appears as diurnus (masculine), diurna (feminine), or diurnum (neuter).
Etymology
From Latin diurnus, meaning "of the day" or "daily," from dies (day).
Example
“Hypoxis diurna and various Oxalis diurna selections open their flowers reliably each morning and close them at dusk — the epithet recording this daily rhythm as a key biological characteristic.”