''Isertia'' is a genus of flowering plants in the family Rubiaceae. It contains 15 species of

shrub A shrub (often also called a bush) is a small-to-medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees ...

s or small trees that are indigenous to the neotropics. A few are cultivated as ornamentals.Huxley AJ, Griffiths M, Levy M, editors. 1992. ''The New Royal Horticultural Society Dictionary of Gardening.'' The Macmillan Press Limited, London; The Stockton Press, New York.

Systematics

''Isertia'' was named by Johann von Schreber in 1789. The generic name honors the German botanist and explorer

Paul Erdmann Isert Paul Erdmann Isert (1756 – 21 January 1789) was a German botanist. Isert was born in Angermünde, Brandenburg, but educated in Berlin. He was the first scientist to identify the bird Red Bishop (Euplectes orix franciscana (Isert)'. He is also k ...

. ''Isertia'' is divided into two

sections Section, Sectioning or Sectioned may refer to: Arts, entertainment and media * Section (music), a complete, but not independent, musical idea * Section (typography), a subdivision, especially of a chapter, in books and documents ** Section sig ...

: section Cassupa and section Isertia. In section Cassupa, the fruit is a berry and the ovary usually has two or three

locule A locule (plural locules) or loculus (plural loculi) (meaning "little place" in Latin) is a small cavity or compartment within an organ or part of an organism (animal, plant, or fungus). In angiosperms (flowering plants), the term ''locule'' usu ...

s. In section Isertia, the fruit is a pyrene and the ovary usually has five or six locules.

Molecular phylogenetic Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to ...

studies have shown that ''Isertia'' is most closely

related ''Related'' is an American comedy-drama television series that aired on The WB from October 5, 2005, to March 20, 2006. It revolves around the lives of four close-knit sisters of Italian descent, raised in Brooklyn and living in Manhattan. The ...

to ''

Kerianthera ''Kerianthera'' is a genus of flowering plants belonging to the family Rubiaceae The Rubiaceae are a family of flowering plants, commonly known as the coffee, madder, or bedstraw family. It consists of terrestrial trees, shrubs, lianas, or h ...

'', a monospecific genus from Amazonian Brazil.

Species

*''

Isertia coccinea ''Isertia'' is a genus of flowering plants in the family Rubiaceae. It contains 15 species of shrubs or small trees that are indigenous to the neotropics. A few are cultivated as ornamentals.Huxley AJ, Griffiths M, Levy M, editors. 1992. ''The Ne ...

'' *''

Isertia haenkeana ''Isertia'' is a genus of flowering plants in the Family (biology), family Rubiaceae. It contains 15 species of shrubs or small trees that are Indigenous (ecology), indigenous to the neotropics. A few are cultivated as Ornamental plant, ornamenta ...

'' *'' Isertia hypoleuca'' *''

Isertia krausei ''Isertia'' is a genus of flowering plants in the family Rubiaceae. It contains 15 species of shrubs or small trees that are indigenous to the neotropics. A few are cultivated as ornamentals.Huxley AJ, Griffiths M, Levy M, editors. 1992. ''Th ...

'' *''

Isertia laevis ''Isertia'' is a genus of flowering plants in the family Rubiaceae. It contains 15 species of shrubs or small trees that are indigenous to the neotropics. A few are cultivated as ornamentals.Huxley AJ, Griffiths M, Levy M, editors. 1992. ''Th ...

'' *''

Isertia longifolia ''Isertia'' is a genus of flowering plants in the family Rubiaceae. It contains 15 species of shrubs or small trees that are indigenous to the neotropics. A few are cultivated as ornamentals.Huxley AJ, Griffiths M, Levy M, editors. 1992. ''Th ...

'' *'' Isertia parviflora'' *''

Isertia pittieri ''Isertia'' is a genus of flowering plants in the family Rubiaceae. It contains 15 species of shrubs or small trees that are indigenous to the neotropics. A few are cultivated as ornamentals.Huxley AJ, Griffiths M, Levy M, editors. 1992. ...

'' *''

Isertia psammophila ''Isertia'' is a genus of flowering plants in the family Rubiaceae. It contains 15 species of shrubs or small trees that are indigenous to the neotropics. A few are cultivated as ornamentals.Huxley AJ, Griffiths M, Levy M, editors. 1992. ...

'' *'' Isertia reticulata'' *'' Isertia rosea'' *'' Isertia scorpioides'' *'' Isertia spiciformis'' *'' Isertia verrucosa'' *'' Isertia wilhelminensis''

References

{{Taxonbar, from=Q6079734 Rubiaceae genera Taxa named by Aimé Bonpland