Stamnostoma

Stamnostoma huttonense Stamnostoma is an extinct genus of seed ferns based on cupules with seeds.

The ovules of Stamnostoma have a complex apex with plug and cone mechanism for creating a chamber for prepollen, as in other Lyginopteridales.

Several ovules are borne on an elongate open cupule of bracts.

Different organs attributed to the same original plant can be reconstructed from co-occurrence at the same localities in the Scottish Borders county of Berwickshire.

This article related to a Carboniferous plant is a stub.

Cupule of Stamnostoma huttonense from the Early Carboniferous Cementstone Group at Newton Foulden, Berwickshire
Fossil foliage Aneimites acadica from the Early Carboniferous Cementstone Group at Newton Foulden, Berwickshire
The Craiglieth tree, Pitus primaeva outside the Natural History Museum, London