Hypericum sampsonii




Family Hypericaceae (alt. Guttiferae)
Scientific name Hypericum sampsonii Hance
Synonyms Hypericum electrocarpum Maximowicz; Hypericum esquirolii H. Léveillé
Common name (Japanese common name) tukinuki-otogiri-sou (ツキヌキオトギリソウ, 突抜弟切草 [meaning: penetrating stems otogiri weed (otogiri = Hypericum weeds; original Japanese meaning is murderer of younger brother)])
(English common name) Sampson St.John's wort
Distribution (Japan) Kyushu
(Other nations) China, Taiwan, Vietnam, Myanmar
Habitat Field, forest edge
Chromosomal number unknown
Description Plants 20-80cm tall. Leaves 3-6.5cm long, 1.5-3cm wide. Flowers yellow 7-8mm across, flowering in June to July. Perennial plants.
Reference Hypericum sampsonii Hance
Hypericum sampsonii Hance
Note Rare species



July 2007
at Kyoto Botanical Garden
July 2007
at Kyoto Botanical Garden
July 2007
at Kyoto Botanical Garden