Rafflesiales is a botanical name

Botanical name

A botanical name is a formal scientific name conforming to the International Code of Botanical Nomenclature and, if it concerns a plant cultigen, the additional cultivar and/or Group epithets must conform to the International Code of Nomenclature for Cultivated Plants...

 of an order

Order (biology)

In scientific classification used in biology, the order is# a taxonomic rank used in the classification of organisms. Other well-known ranks are life, domain, kingdom, phylum, class, family, genus, and species, with order fitting in between class and family...

 of 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. The name was first published by Oliver

Daniel Oliver

Daniel Oliver, FRS was a British botanist.He was Librarian of the Herbarium, Royal Botanic Gardens, Kew from 1860–1890 and Keeper there from 1864–1890, and Professor of Botany at University College, London from 1861–1888....

 in 1895. 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...

 used this name for an order placed in subclass Rosidae

Rosidae

Under the International Code of Botanical Nomenclature , Rosidae is a botanical name at the rank of subclass. Circumscription of the subclass will vary with the taxonomic system being used; the only requirement being that it includes the family Rosaceae....

with the following circumscription (1981) :

• order Rafflesiales

  family Hydnoraceae

  Hydnoraceae

  Hydnoraceae is a family of parasitic flowering plants in the order Piperales. It contains two genera, Hydnora and Prosopanche and some seven species...

  
  

  family Mitrastemonaceae

  family Rafflesiaceae

  Rafflesiaceae

  Rafflesiaceae is a family of parasitic plants found in east and southeast Asia, including Rafflesia arnoldii, the plant with the largest flower of all plants. The plants are endoparasites of vines in the genus Tetrastigma and lack stems, leaves, roots, and any photosynthetic tissue...

  
  

The APG II system

APG II system

The APG II system of plant classification is the second, now obsolete, version of a modern, mostly molecular-based, system of plant taxonomy that was published in April 2003 by the Angiosperm Phylogeny Group. It was a revision of the first APG system, published in 1998, and was superseded in 2009...

 regards Rafflesiaceae as an unplaced family of three genera. Also unplaced is the genus Mitrastema

Mitrastema

Mitrastema is a genus of two widely disjunct species of parasitic plants. It is the only genus within the family Mitrastemonaceae. Mitrastema are root endoparasites, which grow on Fagaceae.-Taxonomy:...

. However, APG II does have a placement for family Hydnoraceae, in the order Piperales

Piperales

Piperales is a botanical name for an order of flowering plants. It necessarily includes the family Piperaceae but otherwise has been treated variously over time...

.

According to the
AP-Website, recent research places Rafflesiaceae in order Malpighiales

Malpighiales

Malpighiales is one of the largest orders of flowering plants, containing about 16000 species, approximately 7.8% of the eudicots. The order is very diverse and hard to recognize except with molecular phylogenetic evidence. It is not part of any of the classification systems that are based only on...

.