Definition

Noun: * A perennial plant with yellow flowers: Hypericum perforatum is a flowering plant species, commonly known as St. John's wort. It is characterized by its bright yellow flowers and small, translucent dots on its leaves that appear perforated when held to the light.

Usage

• is often studied for its potential medicinal properties.
• The spread of can be problematic in grazing areas.

Advanced Usage

• In botanical and pharmacological contexts, is used to specify the exact species, distinguishing it from other plants in the Hypericum genus.
• The binomial nomenclature follows the scientific convention of Genus () followed by the specific epithet ().

Variants and Related Words

• St. John's wort: The common name for .
• Hypericum: The genus to which this plant belongs, containing many species of shrubs and herbs.
• Perforate St. John's-wort: Another common name referencing the "perforated" appearance of its leaves.

Synonyms

• Common St. John's wort
• Klamath weed (a name used in some regions, particularly where it is considered a rangeland weed)

Different Meanings

This term has a single, specific meaning as a scientific plant name. It does not have idiomatic or phrasal verb uses.

Noun

1. yellow-flowered perennial common in fields and waste places but a weed in rangelands