Species of smaller stature with elongate synangia and creeping rhizomes are sometimes segregated into the genus Archangiopteris, and a once-pinnate monotypic segregate genus has been called Macroglossum, but molecular data supports inclusion of these taxa within a broad concept of Angiopteris.
Head entity: Macroglossum
Tail entity: Angiopteris
Relation (head \u2192 tail): taxon synonym
Inverse relation (tail \u2192 head): taxon synonym of