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fernleaf yellow false foxglove

Scientific Name: Aureolaria pedicularia

Family: Scrophulariaceae

Category: Dicot

Growth: Forb/herb

Duration: Annual

Other Names: IA (fern-leaved false foxglove), ME (fern-leaved f

       

Fernleaf Yellow False Foxglove (Aureolaria pedicularia)

The Fernleaf Yellow False Foxglove, scientifically known as Aureolaria pedicularia, is an interesting plant with a unique parasitic relationship. Let's explore its characteristics and ecological role.

Common Names

  • Fernleaf Yellow False Foxglove
  • Northern Oak-leach
  • Hairy False Foxglove

Taxonomy and Nomenclature

  • Scientific Name: Aureolaria pedicularia (L.) Raf.
  • Family:
    • Previously: Scrophulariaceae
    • Currently: Orobanchaceae (Broomrape family)
  • Genus: Aureolaria
  • Taxonomic Rank: Species, Variety (Aureolaria pedicularia var. pedicularia, Aureolaria pedicularia var. intercedens)

Distribution and Habitat

  • Native to North America.
  • Found in locations such as Delaware County, PA; Georgia; New Hanover Co., NC; and Connecticut.
  • Prefers sandhills and dry oak forests.
  • Specifically mentioned as a threatened species in New Hampshire.

Ecological Role

  • Parasitic plant, specifically on the roots of oak trees, particularly white oaks. It is sometimes referred to as "oak-leach".

Morphological Characteristics

  • Herbaceous plant, also classified as a forb.
  • Annual lifespan.
  • Flowers:
    • Yellow in color.
    • Trumpet-shaped corolla.
    • Short green calyx with 5 teeth.
    • Relatively large, about 3 cm (1.2 in.) long, bell-shaped, and borne on the ends of long stalks.
    • Flowers tubular, 1 to 1 inches long,
  • Leaves:
    • Simple and hairy.
    • Delicately dissected leaves, similar to a fern.
  • Stems: sticky and hairy.
  • Bushy plant structure.

Quirky Facts

  • The plant is called "False Foxglove" because it has flowers that look similar to those of a true foxglove (Digitalis).
  • Despite its name, it is more closely related to broomrapes than true foxgloves.
  • It has glandular hairs.
  • Plants are medium in size and can reach 14 meters in height.
  • In the spring it can assume a pink coloring.

Interactions with Other Organisms

  • Parasitizes oak trees, obtaining nutrients from their roots.

Further Information

  • Discover Life: Provides information on the biology, natural history, ecology, identification, and distribution of Aureolaria pedicularia.
  • Dave's Garden: A community where gardeners share tips and ideas.
  • Catherine Herms at The Ohio State University has documented the plant.