Primuloideae is a subfamily of the family Primulaceae in the Taxonomic rank Ericales. Formerly it represented the Primulaceae family (Primulaceae s.s.), before the latter was enlarged (Primulaceae sensu lato) by addition of three other closely related families that formerly represented the order Primulales.
Subfamily is characterised by scapose Inflorescence, distinctly tubular flowers having campanulate or hypocrateriform corolla, imbricate corolla aestivation, isodiametric corolla epidermal cells, leaves almost always forming a basal rosette and ovules rarely immersed in the placenta. In addition they often have syncolpate or sometimes polycolpate pollen, without margo.
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