Sunflower

From Wikipedia, the free encyclopedia

Sunflower
Scientific classification
Kingdom: Plantae Phylum: Magnoliophyta Class: Magnoliopsida Order: Asterales Family: Asteraceae Genus: Helianthus Species: H. annuus
Binomial name
Helianthus annuus L.

The sunflower (Helianthus annuus) is an annual plant native to the Americas in the family Asteraceae, with a large flowering head (inflorescence). The stem of the flower can grow as high as 3 metres tall, with the flower head reaching up to 30 cm in diameter with the "large" seeds. The term "sunflower" is also used to refer to all plants of the genus Helianthus, many of which are perennial plants.



向日葵（Helianthus annuus）

別名太陽花，是一種可高達3米的大形一年生菊科向日葵屬植物。
其盤型花序可寬達30厘米。因花序隨太陽轉動而得名。

向日葵種子叫葵花籽，發芽期為約10—14日。
可以做為零食瓜子，也可以榨葵花籽油，油渣做飼料。

向日葵原產地為美洲。
是秘魯、玻利維亞、俄羅斯等國的國花，
美國堪薩斯州的州花，日本北九州市的市花。