Kenilanthus

Name

Kenilanthus

Rank

Genus

Authors (Pub.)

Friis E. M. Pedersen K. R. Crane P. R.  

Publication

Kenilanthus, a new eudicot flower with tricolpate pollen from the Early Cretaceous (early-middle Albian) of eastern North America [2016/5]

Journal

Grana

Annee/Jahrgang

2017

Volume

56

Issue

3

Page number

162

Year

2016

Parent Taxon

[Class] Magnoliopsida

Fossil Status

flowers

Type

Kenilanthus marylandensis

Diagnosis

Flower small, pentamerous, isomerous, and containing both stamens and carpels. Receptacle dome-shaped. Perianth of a single whorl of five tepals with a possible additional whorl toward the outside; aestivation quincuncial. Androecium of ten stamens in two whorls. Stamens differentiated into a short, stout filament and an elongated, basifixed anther. Anthers dithecate and tetrasporangiate with thecae projecting towards the outside of the flower. Pollen tricolpate and reticulate, heterobrochate with graded reticulum. Muri obliquely segmented and spinulose, supported by sturdy columellae. Gynoecium superior, consisting of one whorl of five free carpels. Carpels distinctly separate below, but converging above. Carpels sessile, elongate, and plicate, with two longitudinal placentae on either side of the ventral suture, each of which bears many ovules in a longitudinal row. Stomata are present on the carpel surface.