Helianthus decapetalus

The birth flowers for September 7 are Thinleaf sunflower(Helianthus decapetalus).

Helianthus Water Drop Poem: “Light Reaching Toward the Sky”

The helianthus is
a flower that seems to hold a drop of the sun itself.
Its orange petals
glow softly as they catch the light.

Tall and slender,
when swayed by the wind, it looks as if it’s reaching out toward the sky.
“It’s not so bad to look up,”
it seems to say, offering a gentle word of encouragement.
poem: Aqua, illust:Gemini

Flower Meanings and Imagery
“Admiration,” “Adoration,” “Temptation,” “Cheerful Personality”

Helianthus

It grows to a height of 1 to 1.5 meters and produces yellow flowers.
The thin, elongated leaves have coarse serrations along their edges.
The flowers are capitula (head-shaped inflorescences), a characteristic of the Asteraceae family; both the ray florets and disk florets are yellow. The ray florets have 10 or more petals, while the disk florets consist of 20 to 50 small florets clustered together.
The fruit that forms after flowering is an achene.

The genus name “Helianthus” is a compound of the Greek words “helios” (sun) and “anthos” (flower), meaning “sunflower.”
The specific epithet “decapetalus” means “having 10 petals.”

Common Name: Helianthus
Scientific Name: Helianthus decapetalus
other names: Thinleaf sunflower, Ten-petaled sunflower
Distribution: Eastern and Central United States, Canada
Life Form: Perennial, Habitat: Forest
Height: 1–1.5 m
Petiole length: 2–5 cm; Leaf texture: thin; Leaf shape: lanceolate; Leaf length: 7–21 cm; Leaf width: 4–10 cm; Leaf margin: coarsely serrated; Leaf arrangement: opposite
Flower color: yellow; Ray florets: yellow, 2 cm long; Number of petals: 10 or more; Disk florets: 20–50 small, yellow florets;
Fruit: achene

Related pages
Helianthus decapetalus
September Birth Flowers　　
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