genus regnellidium

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Definition

Noun: 1. A taxonomic genus of ferns: A genus in the plant family Marsileaceae, containing a single recognized species of aquatic or semi-aquatic fern.

Usage Notes
  • This is a highly specific scientific term used in botany and taxonomy.
  • It is always treated as a singular noun (e.g., "The genus is...").
  • In scientific writing, the genus name is italicized. When used alone, it is often capitalized as a proper noun.
Examples
  • Scientific Context:
    • Genus Regnellidium is monotypic, containing only Regnellidium diphyllum.
    • The fossil record suggests that genus Regnellidium has ancient origins.
    • Researchers are studying the unique spores of Regnellidium.
Advanced Usage
  • The term is primarily used in academic, scientific, and horticultural contexts. It is not used in everyday conversation.
Variants and Related Words
  • Regnellidium (n): The common shorthand for the full term "genus ."
  • Regnellidium diphyllum (n): The sole living species within this genus, commonly known as the two-leaf water fern or regnellidium.
  • Marsileaceae (n): The family of aquatic ferns to which this genus belongs, which also includes the genera (water clover) and (pillwort).
Synonyms
  • Monotypic genus: A descriptive phrase indicating a genus with only one species. (e.g., "It is a monotypic genus.")
Different Meanings
  • There are no common alternative meanings for this term. Its meaning is fixed within biological taxonomy.
Noun
  1. one species of aquatic or semiaquatic fern

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