helianthus

/,hi:li'ænθəs/

Thân thiện

A gardener plants helianthus seeds in a sunny garden bed.

Definition

1. Noun:
   • A plant of the genus Helianthus: Any plant belonging to the botanical genus Helianthus, characterized by large composite flower heads with a central disc of dark florets surrounded by showy, typically yellow, ray florets.

Examples of Usage

• Noun:
  • The common sunflower, Helianthus annuus, is the most well-known helianthus.
  • Several native helianthus species are important for prairie ecosystems.

Advanced Usage

• In botanical/technical contexts: The term is used precisely to refer to members of this specific genus, which includes both cultivated species (like the sunflower) and many wild species.
  • The study focused on the drought resistance of various helianthus.
• In horticulture/gardening: Used to discuss plants from this genus in cultivation.
  • This garden features a collection of perennial helianthus.

Variants and Related Words

• Helianthus (genus name): The scientific Latin name for the genus.
• Sunflower: The common name for the most famous species, . (Note: While "sunflower" is a type of helianthus, it is a specific common name, not the target word itself).
• Jerusalem artichoke: The common name for , a species grown for its edible tubers.

Synonyms

• Sunflower (when referring specifically to or similar species with the characteristic appearance).
• Composite plant: A broader term for plants in the Asteraceae family, which includes helianthus.

Related Phrases / Collocations

• Helianthus species: Refers to the different types within the genus.
  • There are over 70 helianthus species.
• Genus Helianthus: The formal taxonomic grouping.
  • The genus Helianthus is native to the Americas.

Học thuật

Noun

1. any plant of the genus Helianthus having large flower heads with dark disk florets and showy yellow rays

Từ đồng nghĩa

• sunflower