Definition

Noun: 1. A perennial marsh plant: A type of herbaceous plant that lives for more than two years and grows in marshes or wet ground. 2. Characterized by swordlike leaves and aromatic roots: It has long, narrow, pointed leaves resembling a sword and a rootstock (rhizome) that produces a distinctive, pleasant smell.

Usage Notes

• "Sweet flag" is a common name for the plant species .
• It is typically used as an uncountable noun when referring to the plant in general (e.g., a patch of sweet flag) but can be countable when referring to individual plants (e.g., several sweet flags).
• The term specifically highlights the plant's habitat (marsh), its leaf shape (swordlike), and the key feature of its root (aromatic).

Examples

• The botanist identified the sweet flag growing along the edge of the pond.
• The sweet flag's aromatic roots have been used in traditional medicine for centuries.
• We planted sweet flag in the wetland area of the garden to help with erosion control.

Advanced Usage

• "Sweet flag rhizome": This phrase specifies the underground stem (rootstock) of the plant, which is the part most commonly harvested for its aromatic and purported medicinal properties.
  • The essential oil is distilled from the dried sweet flag rhizome.

Variants and Related Words

• Calamus: This is another common name for the same plant, , often used in historical or botanical contexts.
• Acorus calamus: The formal botanical (Latin) name for the species.
• Flag: A more general term that can refer to various plants with sword-shaped leaves, particularly irises. "Sweet flag" distinguishes this aromatic plant from other non-aromatic "flags."

Synonyms

• Calamus
• Myrtle flag (an older, less common name)

Different Meanings

• The word "sweet" in "sweet flag" refers specifically to the pleasant aroma of the root, not to a taste like sugar. The plant itself is known to be pungent and slightly bitter.
• Do not confuse "sweet flag" with the common iris, which also has sword-like leaves but grows from a bulb or corm and is not aromatic.

Noun

1. perennial marsh plant having swordlike leaves and aromatic roots