Astiella is a monospecific genus of flowering plants in the Rubiaceae family. It was described by Jovet (1941) as a monospecific, herbaceous genus, endemic to Madagascar. The only species, Astiella delicatula, has several peculiar characters: it has only two calyx lobes, uni-ovulate locules, distinctly beaked fruits with a conspicuous boat-shape and pluri-aperturate pollen.
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0