Definition

Noun: 1. A small genus of flowering plants: Genus Catharanthus is a taxonomic classification for a small group of erect annual or perennial herbaceous plants. These plants are native to Madagascar but have become widely established in tropical regions around the world. This genus was previously classified under the genus Vinca.

Usage Notes

• This term is used in scientific, botanical, and horticultural contexts.
• It refers specifically to the taxonomic group itself, not to an individual plant. An individual plant is a member of this genus.
• The common name for plants in this genus is "Madagascar periwinkle."

Examples of Usage

• Scientific Classification: "The plant was reclassified from to its correct placement in the genus Catharanthus."
• Botanical Description: "Genus Catharanthus comprises several species known for their glossy leaves and five-petaled flowers."
• Horticultural Context: "Gardeners in tropical climates often cultivate species from the genus Catharanthus for their continuous bloom."

Advanced Usage

• The genus is significant in medicine, as species like are the source of important alkaloids used in chemotherapy (e.g., vinblastine and vincristine).

Variants and Related Words

• Catharanthus (n.): Often used interchangeably as the shortened form of "genus Catharanthus."
  • Example: "Catharanthus is a member of the dogbane family, Apocynaceae."
• Catharanthus roseus (n.): The binomial name (genus + species) for the most well-known species, the Madagascar periwinkle.

Synonyms

• Madagascar periwinkle genus: A descriptive common-name synonym.
• (Formerly) Vinca: Refers to its previous taxonomic placement. (Note: Modern taxonomy distinguishes from .)

Related Terms (Not Synonyms)

• Genus (n.): The taxonomic rank above species and below family.
• Herb (n.): A plant with a non-woody stem that dies back at the end of the growing season.
• Perennial (adj./n.): A plant that lives for more than two years.
• Annual (adj./n.): A plant that completes its life cycle in one year.
• Naturalized (adj.): Referring to a non-native plant that has established itself in a new region.

Noun

1. small genus of erect annual or perennial herbs native to Madagascar; widely naturalized in the tropics; formerly included in genus Vinca