commelinidae

Thân thiện

A botanist carefully examines a specimen of the Commelinidae subclass.

Definition

1. Noun:
   • A taxonomic subclass: In botanical classification, "Commelinidae" is the name of one of the four subclasses or superorders within the Monocotyledones (monocots). It is a large group comprising approximately 19,000 species across 25 families. Its members are predominantly terrestrial herbaceous plants, often found in moist habitats.

Usage

• Scientific Classification: The term is used almost exclusively in the context of plant taxonomy and systematic botany to categorize a major lineage of flowering plants.
  • The order Poales, which includes grasses, is placed within the subclass Commelinidae.
  • Botanists study the evolutionary relationships among families in the Commelinidae.

Advanced Usage

• In Phylogenetic Context: In modern phylogenetic systems (like the APG system), the traditional rank-based name "Commelinidae" is often referred to as the "commelinid monocots," a well-supported clade.
  • The commelinid monocots are a monophyletic group distinct from other monocots like lilies and orchids.

Variants and Related Words

• commelinid (adjective/noun): Pertaining to the Commelinidae subclass; a member of this group.
  • The commelinid families share certain biochemical and morphological characteristics.
• Commelinales (noun): An order of flowering plants within the Commelinidae, containing families like Commelinaceae (the spiderwort family).

Synonyms

• commelinid monocots: A more modern, rank-free term for the same evolutionary group.
• (There are no common-language synonyms, as this is a precise scientific term.)

Different Meanings

• This word has only one specific meaning in scientific (botanical) English. It does not have general or figurative uses.

Notes

• The name "Commelinidae" is derived from the type genus (spiderworts). The group includes economically and ecologically vital families such as:
  • Poaceae (Gramineae - grasses, including cereals like wheat and rice).
  • Cyperaceae (sedges).
  • Arecaceae (palms).
  • Zingiberaceae (ginger family).
  • Bromeliaceae (pineapple family).

Học thuật

Noun

1. one of four subclasses or superorders of Monocotyledones; comprises about 19,000 species in 25 families of mostly terrestrial herbs especially of moist places including: Cyperaceae; Gramineae; Bromeliaceae; and Zingiberaceae

Từ đồng nghĩa

• Commelinidae
• subclass Commelinidae