Pentacentron Manchester, Pigg, Kvaček, DeVore et R.M.Dillhoff

Plant Fossil Names Registry Number: PFN001806

Act LSID: urn:lsid:plantfossilnames.org:act:1806

Authors: S. R. Manchester, K. B. Pigg, Z. Kvaček, M. L. DeVore & R. M. Dillhoff

Rank: genus

Reference: Manchester, S. R., Pigg, K. B., Kvaček, Z., DeVore, M. L. & Dillhoff, R. M. (2018): Newly recognized diversity in Trochodendraceae from the Eocene of western North America. – International Journal of Plant Sciences 179(on–line)(8): 663–676.

Page of description: 667

Type

Original diagnosis/description

Infructescence a spike of sessile pentacarpellate capsules; raceme axis narrow; capsules subglobose, rounded apically, bearing five persistent styles arising subequatorially and incurved (concave toward fruit apex). Elliptical bulge (interpreted as nectary) beneath each style. Base of fruit with a raised rim representing perianth scars. Dehiscence apical, with separation initiating immediately above each style, and joining apically to form a five-rayed starlike opening.

Etymology

Referring to the fivefold symmetry of the fruits, contrasting with the consistently tetramerous symmetry of extant Tetracentron.