rudbeckia

Thân thiện

A gardener plants a cluster of rudbeckia in a sunny flower bed.

Definition

1. Noun:
   • A genus of North American perennial herbs in the daisy family (Asteraceae), characterized by their showy, cone-shaped flower heads. The central disk is typically dark and prominent, surrounded by drooping or spreading yellow, orange, or red petals (ray florets).

Usage Examples

• Noun:
  • The garden was bright with the golden petals of the rudbeckia.
  • She planted several varieties of rudbeckia, including the popular 'Black-eyed Susan'.
  • Rudbeckia hirta is a common species found in many wildflower meadows.

Advanced Usage

• In botanical and horticultural contexts, "rudbeckia" is used to refer to the entire genus, which includes both wild species and cultivated hybrids prized for their long blooming period and hardiness.
• The term is often used metonymically to refer to the flowers themselves.
  • The vase was filled with a stunning arrangement of rudbeckia and asters.

Variants and Related Words

• Rudbeckia hirta: The scientific name for the common Black-eyed Susan.
• Coneflower: A common name for plants in the and genera, referring to their distinctive raised central cone.
• Black-eyed Susan: The most widely recognized common name for several species, particularly .

Synonyms

• Coneflower (Note: This can also refer to the related genus ; context is key.)
• Black-eyed Susan (for specific species)

Related Phrases and Terms

• Rudbeckia fulgida: A species known as Orange Coneflower or Showy Black-eyed Susan.
• Rudbeckia laciniata: A species known as Cutleaf Coneflower or Green-headed Coneflower.
• Perennial rudbeckia: Specifies that the plant lives for more than two years, as opposed to annual or biennial types.

Học thuật

Noun

1. North American perennial herbs with showy cone-shaped flower heads

Từ đồng nghĩa

• Rudbeckia
• genus Rudbeckia