Plant Fossil Names Registry Number: PFN000030
Act LSID: urn:lsid:plantfossilnames.org:act:30
Author: W. L. Crepet
Reference: Crepet, W. L. (1978): Investigations of angiosperms from the Eocene of North America: an aroid inflorescence. – Review of Palaeobotany and Palynology 25: 241–252.
Page of description: 250
Acorus heeri E.W.Berry
Small spadices, 12 mm × 3 mm with a short stalk lacking a subtending spathe, bearing helically arranged perfect florets with bilocular anthers, trilocular ovaries and small orbicular stigmas. Floral envelope epidermis with paracytic stomata. Stalk epidermis of polygonal cells with thick anticlinal walls and no specific orientation, stomata infrequent or missing.