Knowra Common sunflower Common sunflower The common sunflower (Helianthus annuus) is an annual plant native to North America, cultivated for its edible seeds and oil. Its apparent flower is a head composed of many small flowers.
Capitulum : A compact flower head in which many small flowers are borne on a shared receptacle. The sunflower’s large, disk-like head is a capitulum, not one single flower.
Sunflower oil : A vegetable oil extracted from sunflower seeds and used in food and other products. Oil-rich sunflower cultivars are grown specifically for seed pressing.
Domestication of plants : The process by which human selection changes wild plant populations into cultivated forms. Sunflower domestication is one example of a crop developed independently in North America.
Jerusalem artichoke : A North American perennial sunflower cultivated for its edible underground tubers. This close Helianthus relative shares a genus with the common sunflower but is grown for tubers.
Maximilian sunflower : A perennial North American sunflower species with narrow leaves and clusters of yellow flower heads. It resembles common sunflower but is perennial and has smaller, clustered heads.
Floret : One small flower within a dense flower head, such as a sunflower’s central disk. Each sunflower head contains many individual disk florets, alongside ray florets at its edge.
Sunflower seed : The edible seed of the common sunflower, often eaten whole or processed for food and oil. The crop’s seeds are harvested for snacks, ingredients, and oil extraction.
Eastern Agricultural Complex : A set of native North American plants cultivated by Indigenous communities before widespread maize agriculture. Archaeological evidence places sunflower among crops cultivated in this regional tradition.
Safflower : An oilseed crop with thistle-like flower heads, cultivated for its seeds and pigments. Safflower supplies similar oil markets but belongs to a different genus and has a different flower form.
Tithonia rotundifolia : A Mexican annual flowering plant with orange-red daisy-like heads, grown as an ornamental. Its showy heads resemble sunflowers, but it belongs to another genus and has orange-red florets.
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