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

Plant Fossil Names Registry Number: PFN001807

Act LSID: urn:lsid:plantfossilnames.org:act:1807

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

Rank: species

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

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

Illustrations or figures: figs 6, 7A, B

Name is type for

Types

Original diagnosis/description

Infructescences 5.8–9.2 cm long, 0.5–0.8 cm wide, infructescence axis 1.0–2.2 mm thick, bearing helically arranged capsular fruits. Capsules subglobose, pentagonal in apical view, 1.3–4.5 mm wide, styles 1.2 mm long, incurved (convex) toward fruit apex. Elliptical bulge (nectary) beneath each style 0.4 mm wide, 0.6 mm high. Perianth scar forming a flange beneath each fruit. Capsules dehiscing apically by separation lines extending apically from immediately above each style.

Etymology

Named for Michael E. Sternberg and Janet L. Hartford, recognizing their promotion of research and education at the Republic fossil site and Stonerose Interpretive Center, Republic, Washington, and whose work facilitated the collection of these specimens.

Stratigraphy

Paleogene, Eocene
Tom Thumb Ash Member of the Klondike Mountain Formation, latest early Eocene

Locality

United States
Boot Hill, Republic, Washington; Locality UWBM 4131