Weed Science & Agronomy
INRA-Dijon
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Unité de Malherbologie & Agronomie Weed Science & Agronomy INRA-Dijon |
Bayer Code : hyphu
Synonym(s) of Sc. name:
Classification: Guttiferae, Dicotyledonous
Common name: trailing st. john's-wort
Synonym(s) of Common name:
Name per country: DE : Erd-Johanniskraut ; ES : ; FR : millepertuis couché ; IT : erba di San Giovanni prostrata ; PT : hipericão-estriado ; EN : trailing st. john's-wort ; NL : liggend hertshooi ;
Biological type: Perennial, Annual
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- Cotyledons lengthened spoon-shaped.
- Leaves entire, elliptic to ovate, entire-margined.
- Height: 3-25 cm. Plant prostrate.
- Stem hollow, filiform, nearly 2-edged.
- Leaves sessile, ovate to elliptic, entire-margined, 3-15 mm, with black oily glands on border like, the sepals.
- Flowers light-yellow, in few-branched cyme, petals 5-7 mm, obtuse sepals short acute and dentate at the apex.
- Fruit : capsule ovate; seeds dark-brown, globose, 0.5-0.6 mm, wrinkled and warty.
- Plant discutient, stimulant, vermifuge, a very good quick vulnerary. There is a dyeing component yellow in water and red in oil. The perennial plant propagates with underground buds from rhizomes or sometimes from root.
- Risk of confusion with Hypericum perforatum L., Lythrum hyssopifolia L. (at seedling stage).
- Biological type: Perennial but annual in crops.
Mistake with: Hypericum perforatum , Lythrum hyssopifolia
Ecological profile (click on flags):
Present
Rare
Rare
Present
Present
