Paradinandra suecica Schönenb. et E.M.Friis

Plant Fossil Names Registry Number: PFN001976

Act LSID: urn:lsid:plantfossilnames.org:act:1976

Authors: J. Schönenberger & E. M. Friis

Rank: species

Genus: Paradinandra Schönenb. et E.M.Friis

Reference: Schönenberger, J. & Friis, E. M. (2001): Fossil flowers of ericalean affinity from the Late Cretaceous of Southern Sweden. – American Journal of Botany 88(3): 467–480., link

Page of description: 479

Illustrations or figures: figs 1–38

Name is type for

Types

Original diagnosis/description

Flower small, in axil of subtending bract, short pedunculate, bibracteolate, actinomorphic, hypogynous, pentamerous; calyx probably initiated in a spiral, all other floral parts whorled, whorls alternating; calyx of five distinct and imbricate sepals; corolla of five basally united (?) petals, imbricate; androecium of 15 stamens, diplostemon, inner whorl with stamen pairs, filaments basally united and fused to the corolla (?); anthers basifixed, x-shaped, dithecal, tetrasporangiate, probably opening by restricted apical slits; pollen small, tricolpate (?) with long colpi, exine finely foveolate; intrastaminal nectary disc; gynoecium trimerous, syncarpous, superior; with three almost completely free elongate styles; ovary unilocular, placentation parietal (ovary with incomplete septa); ovules numerous, campylotropous, surface reticulate. Small scales present in the axils of the bracteoles, sepals broadly lanceolate, aestivation quincuncial, abaxial epidermis slightly papillate, with a prominent middle vein and simple trichomes abaxially, margins membraneous; petals mitriform, aestivation quincuncial; anthers stacked on three levels in the bud; filaments massive basally and tapering apically; thecae with enlarged epidermal cells along the stomium; styles with ventral slits; ovary with simple trichomes in older stages.

Etymology

The specific epithet refers to Sweden where the fossil material was collected.

Stratigraphy

Cretaceous, Upper Cretaceous
Fluviatile-lacustrine sequence (Late Santonian-Early Campanian)

Locality

Sweden
Höganäs AB quarry at Åsen near Axeltorp, Scania