helianthus
/,hi:li'ænθəs/
Definition
- 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.
Noun
-
any plant of the genus Helianthus having large flower heads with dark disk florets and showy yellow rays
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