Name: Oncidium ornithorhynchum Kunth

Etymology: The genus name Oncidium derives from the Greek onkos, meaning “swelling” or “knob,” and refers to the thickened structure of the lip in many species. The specific epithet ornithorhynchum is composed of Greek word elements for “bird” and “beak” and broadly means “bird-beaked.”

Origin/Distribution: Mexico and Central America.

Location/Habitat: This species grows epiphytically in humid to seasonally drier montane forests. We recommend bright, filtered light, good air circulation, and moderate to high humidity. Temperate conditions of approximately 14–26 °C during the day and 10–18 °C at night are favorable. Water regularly during active growth.

Description and Notes: Oncidium ornithorhynchum produces pseudobulbs with narrow leaves and branched inflorescences bearing numerous small, attractively colored flowers that are often pleasantly fragrant. We grow this species in a loose, airy orchid mix. During growth, we water and fertilize regularly, using water that is as soft as possible; after the pseudobulbs mature, we reduce watering somewhat without allowing the plant to dry out completely.