The St. John’s Wort (Hypericum sampsonii) is a flowering perennial herb in the Hypericaceae family.
It is native to Asia, in China, Taiwan, Japan, Myanmar, and Vietnam.
It grows to 20-80 centimetres (8-32 inches) tall.
The St. John’s Wort has thick, papery leaves about 2-8 centimetres (1-3 inches) long with a pale underside.
The flowerhead has 20-40 flowers, about one centimetre (half an inch) in diameter, each with five bright yellow petals. Each flower has 30-42 stamens.
It blooms between May and July in the Northern Hemisphere.
Photographed in the Botanical Garden, Paris, October 2019 and July 2020.
Photographer: Martina Nicolls