Definition

Noun 1. A species of flowering plant: Phacelia tanacetifolia is the scientific name for a specific annual herbaceous plant. It is characterized by its hairy, fern-like foliage and dense clusters of small, bell-shaped flowers that range in color from blue to lilac or mauve.

Usage Notes

• This term is a proper noun, specifically a binomial name in botanical nomenclature. It is always written in italics (or underlined when handwriting). The first part () is the genus name and is capitalized. The second part () is the specific epithet and is written in lowercase.
• It is used in formal, scientific, agricultural, and horticultural contexts to precisely identify this species. Common names for this plant include "lacy phacelia," "tansy-leaf phacelia," or "blue tansy."

Examples

• Scientific/Agricultural Context:
  • Farmers often plant Phacelia tanacetifolia as a cover crop to improve soil health and attract pollinators.
  • The study focused on the nectar production of Phacelia tanacetifolia.
• Horticultural/Gardening Context:
  • For a beautiful bee-friendly garden, include Phacelia tanacetifolia in your wildflower mix.
  • The seed packet was labeled clearly with the name Phacelia tanacetifolia.

Advanced Usage

• In Taxonomic Description: The specific epithet "" is a descriptive Latin compound meaning "with leaves like tansy" (), referring to the plant's finely divided, fern-like foliage which resembles that of the tansy plant.

Variants and Related Words

• Common Names: These are not scientific variants but vernacular terms for the same species.
  • Lacy phacelia: Highlights the delicate, lacy appearance of the leaves.
  • Fiddleneck: A common name shared with other Phacelia species, referring to the coiled shape of the flower cluster before it blooms.
  • Blue tansy / Tansy-leaf phacelia: References the flower color and leaf shape.
• Related Taxonomic Rank:
  • Genus Phacelia: The broader group to which this species belongs. It includes many other species with similar flower structures.
  • Family Boraginaceae: The plant family encompassing the genus Phacelia.

Synonyms

• Scientific Synonym: There are no widely accepted different scientific names for this species. is the current standard.
• Common Name Synonyms: Lacy phacelia, tansy-leaf phacelia, blue tansy, fiddleneck (context-dependent).

Related Phrases/Idioms

• As a common noun phrase: When not used as a proper scientific name, the words can be read descriptively.
  • A phacelia with tanacetifolia leaves (though this is an unusual construction outside of taxonomy).

Noun

1. hairy annual of California to Mexico with crowded cymes of small blue to lilac or mauve flowers