Campanulales is a valid botanic name for a plant order. It was used in the Cronquist system

Cronquist system

The Cronquist system is a taxonomic classification system of flowering plants. It was developed by Arthur Cronquist in his texts An Integrated System of Classification of Flowering Plants and The Evolution and Classification of Flowering Plants .Cronquist's system places flowering plants into two...

 as an order within the subclass Asteridae

Asteridae

Asteridae is a clade of plants, known for their flowers. Asteridae has been ranked as a subclass, but this ranking has varied depending on the taxonomy being used...

 in the class Magnoliopsida

Magnoliopsida

Magnoliopsida is a valid botanical name for a class of flowering plants. By definition the class will include the family Magnoliaceae, but its circumscription can otherwise vary, being more inclusive or less inclusive depending upon the classification system being discussed.-Cronquist and...

 flowering plant

Flowering plant

The flowering plants , also known as Angiospermae or Magnoliophyta, are the most diverse group of land plants. Angiosperms are seed-producing plants like the gymnosperms and can be distinguished from the gymnosperms by a series of synapomorphies...

s. As then circumscribedit included families:

• Pentaphragmataceae In Watson and Dallwitz this family has 1 genus, Pentaphragma with 30 species from southeast Asia.
• Sphenocleaceae - 1 genus
• Campanulaceae
  Campanulaceae
  The family Campanulaceae , of the order Asterales, contains about 2000 species in 70 genera of herbaceous plants, shrubs, and rarely small trees, often with milky non-toxic sap...
  
   (harebells) - 28 genera
• Stylidiaceae
  Stylidiaceae
  The family Stylidiaceae is a taxon of dicotyledonous flowering plants. It consists of five genera with over 240 species, most of which are endemic to Australia and New Zealand. Members of Stylidiaceae are typically grass-like herbs or small shrubs and can be perennials or annuals...
  
   In Watson and Dallwitz it has 5 genera and 150 species.
• Donatiaceae
• Brunoniaceae In Watson and Dallwitz there is only one species in the family, Brunonia australis
• Goodeniaceae
  Goodeniaceae
  Goodeniaceae are a family of flowering plants in the order Asterales. It contains about 404 species in twelve genera. The family is distributed mostly in Australia, except for the genus Scaevola, which is pantropical...
  
   (naupaka) - 1 genus

Campanulales is not recognized as an order in the APG II system, where the families are included in order Asterales

Asterales

Asterales is an order of dicotyledonous flowering plants that includes the composite family and its related families.The order is a cosmopolite, and includes mostly herbaceous species, although a small number of trees and shrubs are also present.The Asterales can be characterized on the...

, except for Sphenocleaceae in Solanales

Solanales

The Solanales are an order of flowering plants, included in the asterid group of dicotyledons. Some older sources used the name Polemoniales for this order....

.