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单词 Common sunflower
释义

Common sunflower

原声例句
Crash Course 植物学篇

Take, for example, Sonny's namesake, the common sunflower.

以桑尼的名字为例,普通的向日葵。

英语百科

Helianthus annuus

Head displaying florets in spirals of 34 and 55 around the outside
Illustration of Vogel's model for n=1 ... 500
A sunflower seed dehulled (left) and with hull (right)

Helianthus annuus, the common sunflower, is a large annual forb of the genus Helianthus grown as a crop for its edible oil and edible fruits (sunflower seeds). This sunflower species is also used as bird food, as livestock forage (as a meal or a silage plant), and in some industrial applications. The plant was first domesticated in the Americas. Wild Helianthus annuus is a widely branched annual plant with many flower heads. The domestic sunflower, however, often possesses only a single large inflorescence (flower head) atop an unbranched stem. The name sunflower may derive from the flower's head's shape, which resembles the sun, or from the false impression that the blooming plant appears to slowly turn its flower towards the sun as the latter moves across the sky on a daily basis.

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