Isertia
# Isertia

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.

## Systematics

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

Isertia is divided into two sections: section Cassupa and section Isertia. In section Cassupa, the fruit is a berry and the ovary usually has two or three locules. In section Isertia, the fruit is a pyrene and the ovary usually has five or six locules.

Molecular phylogenetic studies have shown that Isertia is most closely related to Kerianthera, a monospecific genus from Amazonian Brazil.

## Species

* Isertia coccinea (Aubl.) J.F.Gmel.
* Isertia haenkeana DC.
* Isertia hypoleuca Benth.
* Isertia krausei Standl.
* Isertia laevis (Triana) B.M.Boom
* Isertia longifolia (Hoffmanns. ex Schult.) K.Schum.
* Isertia parviflora Vahl
* Isertia pittieri (Standl.) Standl.
* Isertia psammophila N.Dávila
* Isertia reticulata Britton ex Rusby
* Isertia rosea Spruce ex K.Schum.
* Isertia scorpioides B.M.Boom
* Isertia spiciformis DC.
* Isertia verrucosa (Humb. & Bonpl.) Standl.
* Isertia wilhelminensis Steyerm.
