''Stelmagonum hahnianum'' 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 ...

s belonging to the family

Apocynaceae Apocynaceae (, from '' Apocynum'', Greek for "dog-away") is a family of flowering plants that includes trees, shrubs, herbs, stem succulents, and vines, commonly known as the dogbane family, because some taxa were used as dog poison. Notable mem ...

. It is the sole representative of the genus ''Stelmagonum''. Its native range is Southwestern Mexico. '' Ibatia holtonii'' was once placed in the genus as ''Stelmagonum holtonii''.

References

{{Taxonbar, from=Q6133971, from2=Q18082211 Asclepiadoideae Monotypic Apocynaceae genera