What cactus genus famously blooms at night?

Trivia: What cactus genus famously blooms at night?

Cereus
Organ pipe
Rhipsalis
Ariocarpus

The correct answer is Cereus

So why is this answer correct? : Cereus plants, named for the Latin words for “torch” or “candle,” produce large flowers that bloom only at night. These nocturnal blooms reduce the competition for pollinators while also reducing water usage. Other cacti, such as queen of the night cacti, bloom only one night out of the year. However, these plants make the most of their limited blossoms by producing massive 7-inch-wide flowers.

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