The Speedyweed (Flaveria trinervia) is a flowering annual plant in the Asteraceae family. It is also called Clustered Yellowtops and Yellow Twinstem.
It is native to North America and Central America.
It is an erect herb, growing to 200 centimetres (79 inches) tall.
It has oval-shaped leaves about 15 centimetres (8 inches) long.
The inflorescence is a large, dense cluster of many very small flower heads, sometimes over 300 in one cluster. Each flower head contains one yellow or whitish ray floret and up to 2 disc florets.
Photographed at the Paris Botanical Garden, France, July 2022.
Photographer: Martina Nicolls
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