IDNAME urn:idName:fossilplants.info:genus:28CF8ED3-BC30-44E9-AF1B-935BF9E17A46 genus
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Archaestella

Genus Archaestella M. Takahashi, Herendeen, X.-H. Xiao J. Pl. Res. [6]. 11 May 2017
Name
Archaestella
Rank
Genus
Authors (Pub.)
Takahashi M. Herendeen P. S. Xiao X.-H.  
Publication
Two early eudicot fossil flowers from the Kamikitaba assemblage (Coniacian, Late Cretaceous) in northeastern Japan [2017/5]
Journal
Journal of Plant Research
Page number
[6]
Year
2017

Parent Taxon
[Order] Trochodendrales
Fossil Status
flowers

Type
Archaestella verticillata
Diagnosis
Flower actinomorphic, bisexual, semiinferior, and multi-carpellate. Floral receptacle concave, with a perigynous perianth consisting of several tepals, borne around the rim. Androecium consisting of ca. 120 stamens with clear differentiation into anther and filament. Gynoecium consisting of a whorl of 10 conduplicate, laterally connate but distally distinct carpels with a conspicuous dorsal bulge, including a small central cavity. Styles recurved with papillate and ventrally decurrent stigma. Ovules ca. 10 per carpel, marginal, pendulous from the broad, concrescent oblique summit of the locule. Seeds with chalazal, apical and lateral wing-like extensions. Pollen grains, tricolpate, with reticulate exine pattern.


Links by genus

Species
Archaestella verticillata

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