Sunflowers

Sunflowers

Sunflowers (Helianthus annuus) are a species of flowering plant in the family Asteraceae, native to North America. The name "sunflower" comes from the Greek words "helios" (sun) and "anthos" (flower).

Pronunciation

Sunflower: /ˈsʌnˌflaʊər/

Etymology

The term "sunflower" is derived from the flower's appearance, which resembles the sun. The scientific name, Helianthus annuus, is derived from Greek, with "helios" meaning sun and "anthos" meaning flower. "Annus" refers to the plant's annual growth cycle.

Description

Sunflowers are known for their large, bright yellow flowers and tall, sturdy stems. The flower head is actually composed of numerous small flowers called florets, which can develop into sunflower seeds. The plant is also characterized by its ability to track the sun, a phenomenon known as heliotropism.

Cultivation and Uses

Sunflowers are cultivated for their seeds, which are used for their oil, as bird feed, and as a health food. Sunflower oil is commonly used in cooking and in cosmetic formulations due to its emollient properties. The plant is also used in gardening for its aesthetic appeal and to attract wildlife.

Related Terms

• Heliotropism: The directional growth of a plant in response to sunlight.
• Floret: A small flower that is part of a larger arrangement in a flower head.
• Sunflower seed: The fruit of the sunflower, used as a health food and for extracting oil.

See Also

• Asteraceae: The family of flowering plants that includes sunflowers.
• Flowering plant: A plant that produces flowers in order to reproduce.

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