''Holtonia microcarpa'' is a species of

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (). The term angiosperm is derived from the Ancient Greek, Greek words (; 'container, vessel') and (; 'seed'), meaning that the seeds are enclosed with ...

in the family

Rubiaceae Rubiaceae () is a family (biology), family of flowering plants, commonly known as the coffee, madder, or bedstraw family. It consists of terrestrial trees, shrubs, lianas, or herbs that are recognizable by simple, opposite leaves with Petiole ( ...

. It is the sole species in genus ''Holtonia''. It is a tree native to the tropical Americas, ranging from Costa Rica and Panama to Venezuela, Colombia, Ecuador, Peru, and Bolivia.

References

{{Taxonbar, from=Q87154510, from2=Q125659400 Rubiaceae Monotypic Rubiaceae genera Flora of Bolivia Flora of Colombia Flora of Costa Rica Flora of Ecuador Flora of Panama Flora of Peru Flora of Venezuela Plants described in 1799 Taxa named by José Antonio Pavón Jiménez Taxa named by Hipólito Ruiz López