Hypericum tetrapterum
Square-stalked St John's-wort
Family HypericaceaeAlso called St. Peter's wort, Peterwort
About
Square-stalked St John's-wort is a perennial of damp places in Europe, North Africa and western Asia, recognised by its winged square stems.
Field notes
Morphology
A hairless, rhizomatous plant up to 1.2 m tall. Square stems have conspicuous wings. Thin leaves up to 4 cm long are dotted with translucent glands. Heads of 10–30 or more pale yellow flowers are 10–15 mm across.
Distribution & habitat
Temperate Europe, the Mediterranean, north Africa, western Asia, the Caucasus, Iraq and Iran, in marshes, streamsides, ditches, meadows and springs.
Habitat
- Altitude
- Not recorded
- Altitude class
- —
Cultivation
- Difficulty
- Not recorded
Text adapted from Wikipedia, CC BY-SA 4.0.
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