''Coldenia'', named after C. Colden, is a monotypic

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...

s traditionally included in the

borage Borage ( or ; ''Borago officinalis''), also known as starflower, is an annual herb in the flowering plant family Boraginaceae. It is native to the Mediterranean region, and has naturalized in many other locales. It grows satisfactorily in gard ...

family,

Boraginaceae Boraginaceae, the borage or forget-me-not family, includes about 2,000 species of shrubs, trees and herbs in 146, to 156 genera with a worldwide distribution. The APG IV system from 2016 classifies the Boraginaceae as single family of the or ...

sensu lato ''Sensu'' is a Latin word meaning "in the sense of". It is used in a number of fields including biology, geology, linguistics, semiotics, and law. Commonly it refers to how strictly or loosely an expression is used in describing any particular c ...

''.Encyclopedia of Life: Coldenia
/ref> It was assigned to the subfamily

Ehretioideae Ehretioideae is a subfamily of the flowering plant family Boraginaceae. Genera *''Bourreria'' P.Browne *'' Cortesia'' Cav. *''Ehretia'' P.Browne *''Halgania'' Gaudich. *'' Ixorhea'' Fenzl *'' Lepidocordia'' Ducke *'' Menais'' Loefl. *'' Pa ...

, but molecular data revealed it to be more closely related to the genus ''

Cordia ''Cordia'' is a genus of flowering plants in the borage family, Boraginaceae. It contains about 300 species of shrubs and trees, that are found worldwide, mostly in warmer regions. Many of the species are commonly called manjack, while ''bocote ...

'', so that other authors placed in Cordioideae. Subsequently, it was placed in its own family, Coldeniaceae, within the Boraginales order, by the Boraginales Working Group. The sole species is ''Coldenia procumbens''.

References

Bibliography

* Cordioideae Monotypic asterid genera Boraginaceae genera {{asterid-stub