St. John's Wort (Hypercurium perforatum)
Saint John's Wort, so-called because it is traditionally harvested on St. John's Day, is a striking perennial herb indigenous to Europe.
Hypercurium perforatum, St. John's Wort, is a herbaceous perennial plant with extensive, creeping rhizomes. Its stems are erect, branched in the upper section, and can grow to 1 m high. It has opposite, stalkless, narrow, oblong leaves that are 1–2 cm long. The leaves are yellow-green in color, with scattered translucent dots of glandular tissue. The dots are conspicuous when held up to the light, giving the leaves the 'perforated' appearance to which the plant's Latin name refers. The flowers measure up to 2.5 cm across, have five petals, and are colored bright yellow with conspicuous black dots.
Latin Name: Hypercurium perforatum
Common Names: perforate St John's-wort, common Saint John's wort
Plant Family: Hypericaceae
Taste: slightly bitter, pungent, sweet
Energy: Neutral, Dry
Part Used: Flowers & Leaves
For External Use Only
- May potentiate pharmaceutical MAO-inhibitors.
- Avoid prolonged exposure to sunlight.
- Do not use during phototherapy (laser or ultraviolet).
- Do not use artificial light, such as a tanning bed.
- Discontinue use if skin irritation or rash occurs.