dagger fern

Thân thiện

A hiker admires a cluster of dagger fern growing on a shaded forest slope.

Definition

1. Noun:
   • A type of evergreen fern native to North America: "dagger fern" refers to a specific species of fern characterized by its pinnate leaves (leaves divided into leaflets arranged on either side of a central stem) and dense clusters of fronds (large, divided leaves) that are lance-shaped (long, narrow, and tapering to a point).

Usage Examples

• Noun:
  • The shaded area of the garden was perfect for planting a dagger fern.
  • Botanists identified the plant as a dagger fern due to its distinctive lance-shaped fronds.

Advanced Usage

• In botanical descriptions: The term is used in scientific or horticultural contexts to specify this particular species (, also commonly known as the Christmas fern).
  • The field guide listed the dagger fern as a common understory plant in eastern North American forests.

Variants and Related Words

• Christmas fern: A common name for the same species, .
  • Many people know the dagger fern by its other name, the Christmas fern.

Synonyms

• Polystichum acrostichoides: The scientific binomial name for the dagger fern.
• Evergreen fern: A general descriptive term highlighting its year-round foliage.

Related Phrases

• Fern with pinnate leaves: A descriptive phrase focusing on its leaf structure.
• Cluster of fronds: A phrase describing its growth habit.

Học thuật

Noun

1. North American evergreen fern having pinnate leaves and dense clusters of lance-shaped fronds

Từ đồng nghĩa

• Christmas fern
• canker brake
• evergreen wood fern
• Polystichum acrostichoides