Definition

Noun: 1. A taxonomic order of flowering plants: "Umbellales" is the botanical name for an order of plants characterized primarily by having their flowers arranged in umbels or corymbs. This order historically included families such as the Apiaceae (Umbelliferae, the carrot or parsley family) and the Cornaceae (the dogwood family).

Usage Notes

• The term "order Umbellales" is used in scientific classification (taxonomy) and botany. It is a formal, technical term.
• In modern botanical classification systems (e.g., the Angiosperm Phylogeny Group system), the name and composition of this order have been revised. The families once grouped under Umbellales are now often placed within the order Apiales.

Examples

• Scientific Context:
  • The plant's floral structure placed it clearly within the order Umbellales.
  • Botanists have studied the evolutionary relationships within the Umbellales.

Advanced Usage

• The defining feature of plants in this order is the inflorescence type: an umbel (a flat-topped or rounded flower cluster where all stalks arise from a common point) or a corymb (a flat-topped flower cluster with the outer flowers opening first).

Variants and Related Words

• Umbellifer (n): A common name for a member of the family Apiaceae (Umbelliferae), which was a key family within the Umbellales. Example:
• Apiales (n): The modern order name that now encompasses many of the plants formerly classified under Umbellales.
• Umbellate (adj): Describing something arranged in or having the form of an umbel. Example:

Synonyms

• Apiales (in modern phylogenetic contexts)

Different Meanings / Contexts

• This term has a single, specific meaning in the context of plant taxonomy and has no general English usage outside of scientific discourse.

Noun

1. plants having umbels or corymbs of uniovulate flowers; includes the Umbelliferae (chiefly herbs) and Cornaceae (chiefly trees or shrubs)