Under the

International Code of Nomenclature for algae, fungi, and plants The ''International Code of Nomenclature for algae, fungi, and plants'' (ICN) is the set of rules and recommendations dealing with the formal botanical names that are given to plants, fungi and a few other groups of organisms, all those "trad ...

(ICN), Rosidae is a

botanical name A botanical name is a formal scientific name conforming to the ''International Code of Nomenclature for algae, fungi, and plants'' (ICN) and, if it concerns a plant cultigen, the additional cultivar or Group epithets must conform to the '' Inte ...

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 Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Rosaceae. Under Phylocode, Rosidae is a clade defined as the most inclusive crown clade containing '' Rosa cinnamomea'',''sensu'' L. 1753 ''non'' L. 1759 but not ''

Berberidopsis corallina ''Berberidopsis corallina'' is a species of ornamental plant Ornamental plants or garden plants are plants that are primarily grown for their beauty but also for qualities such as scent or how they shape physical space. Many flowering plants a ...

'' nor '' Dillenia indica'' nor '' Gunnera manicata'' nor ''

Helianthus annuus The common sunflower (''Helianthus annuus'') is a large annual forb of the genus ''Helianthus'' grown as a crop for its Sunflower seed, edible oily seeds. Apart from sunflower oil, cooking oil production, it is also used as livestock forage (as ...

'' nor ''

Saxifraga mertensiana ''Saxifraga mertensiana'', the wood saxifrage or Mertens' saxifrage, is a species of plant in the Saxifragaceae family. It is native to western North America. References External links * *Jepson Manual Treatment Stellaria media ''Stellaria media'', chickweed, is an annual and perennial flowering plant in the family Caryophyllaceae.Fernald, M. L. 1950. “Gray's Manual of Botany”. Eight Edition. American Book Company, New York, NY. 1632 pp. It is native to Euras ...

'' nor '' Viscum album''. A well-known example of Rosidae as governed by the ICN was in the

Cronquist system The Cronquist system is a taxonomic classification system of flowering plants. It was developed by Arthur Cronquist in a series of monographs and texts, including ''The Evolution and Classification of Flowering Plants'' (1968; 2nd edition, 1988) ...

. In the 1981, original, version of that system, the circumscription was as follows. Arthur John Cronquist. 1981. ''An Integrated System of Classification of Flowering Plants''. Columbia University Press: New York, NY, USA. * subclass Rosidae The Phylocode definition includes

Crossosomatales The Crossosomatales are an order, first recognized as such by Angiosperm Phylogeny Group, APG II. They are flowering plants included within the Rosids, Rosid eudicots. Description Species assigned to the Crossosomatales have in common flowers ...

, Geraniales,

Myrtales The Myrtales are an order of flowering plants placed as a sister to the eurosids II clade as of the publishing of the ''Eucalyptus grandis'' genome in June 2014. The APG III system of classification for angiosperms still places it within the eur ...

, Fabidae ( Celastrales, Cucurbitales, Fabales,

Fagales The Fagales are an order of flowering plants, including some of the best-known trees. The order name is derived from genus ''Fagus'', beeches. They belong among the rosid group of dicotyledons. The families and genera currently included are a ...

, Huaceae, Oxalidales,

Malpighiales The Malpighiales comprise one of the largest orders of flowering plants, containing about 36 families and more than species, about 7.8% of the eudicots. The order is very diverse, containing plants as different as the willow, violet, poinse ...

, Rosales and Zygophyllales), Malvidae ( Brassicales, Huerteales, Malvales, and Sapindales) as they are defined in the APG III system. This definition was formulated in 2007, and is agnostic on the inclusion or exclusion of Picramniales and Vitales. Philip D. Cantino, James A. Doyle, Sean W. Graham, Walter S. Judd, Richard G. Olmstead, Douglas E. Soltis, Pamela S. Soltis, and Michael J. Donoghue. 2007. Electronic Supplement: pages E1-E44. To: Cantino et alii. 2007. "Towards a phylogenetic nomenclature of ''Tracheophyta''". ''Taxon'' 56(3):822–846. (see ''External links'' below). Since 2007, the phylogenetic positions of Picramniales and Vitales have been clarified. The position of Picramniales as sister to Malvidae sensu stricto requires it to be included among the rosids. Vitales is sister to the clade of all that must be included in the rosids and its inclusion is optional. In APG III, it was included. There is considerable overlap between the two definitions. Some apparent differences are the result of more broadly drawn orders in the second. Apiales, Cornales, Proteales and Santalales, and parts of Rafflesiales (sensu Cronquist) are excluded from the second, and many groups from Cronquist's

Hamamelidae Hamamelididae is an obsolete botanical name at the rank of subclass. Because some hamamelidid members bear aments (''i.e.'', catkins), this subclass has been formerly known as ''Amentiferae''. Based on molecular phylogeny works, Hamamelididae ...

and

Dillenidae Dillenidae 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 Dilleniaceae. A well-known system that uses this na ...

are included. In both senses, the term " rosid" applies, as an adjective and noun, to members of the group. In the APG III system, which eschewed formal

s between the ranks of class and

order Order, ORDER or Orders may refer to: * Categorization, the process in which ideas and objects are recognized, differentiated, and understood * Heterarchy, a system of organization wherein the elements have the potential to be ranked a number of d ...

, the term "rosids" is used to define an informal clade corresponding to Rosidae as defined in the Phylocode.

References

{{reflist

External links

* ''Rosidae'' at th
TAMU Lab

Electronic Supplement to Cantino et alii
Plant subclasses bg:Розиди es:Rosidae no:Rosidae pl:Różowe