Cereus

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Definition

Noun: 1. A genus of cacti: A genus (Cereus) of cacti characterized by a highly branched, tree-like or shrubby form. These plants typically have pronounced ribs, rounded needle-like spines, and produce large, often fragrant flowers that bloom at night and are usually white.

Usage
  • The word "cereus" is used as a proper noun to refer specifically to this genus of plants within botanical contexts.
  • It is often used in the full scientific name of a species (e.g., ).
  • In common gardening or horticultural use, it may be used more loosely to describe columnar, night-blooming cacti.
Examples
  • Noun:
    • The cereus in the botanical garden is over fifty years old.
    • We stayed up late to watch the night-blooming cereus open its flowers.
    • Cereus hildmannianus is a widely cultivated species.
Advanced Usage
  • "Night-blooming cereus": This is a common name used for several species of cacti, including those in the genus, that flower exclusively at night. The term highlights the plant's most distinctive ornamental feature.
    • The night-blooming cereus is a spectacular sight, with flowers that wilt by dawn.
Variants and Related Words
  • Cereoid (adj): Resembling or relating to plants of the genus .
  • Note: Many plants formerly classified under have been reclassified into other genera (e.g., , ), but the common name "cereus" is still frequently used for them.
Synonyms
  • Columnar cactus: A descriptive term for cacti with a tall, upright growth form, which includes many cereus species.
  • Night-blooming cactus: A general term for cacti that flower at night.
Related Terms (Botanical Context)
  • Cactus: The broader plant family (Cactaceae) to which cereus belongs.
  • Rib: A vertical ridge on the stem of a cactus, a pronounced feature of cereus.
  • Areole: The small, specialized area on a cactus from which spines, flowers, or branches grow.
Noun
  1. genus of much-branched treelike or shrubby cacti with pronounced ribs and rounded needlelike spines and nocturnal flowers usually white

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