polyanthus means A type of primula, apparently originally from a hybrid between the cowslip and the primrose, having many different-coloured flowers. Lexicurio rates it Sui generis — a strength score of 89 out of 100.
noun
- A type of primula, apparently originally from a hybrid between the cowslip and the primrose, having many different-coloured flowers.“[T]he Hens all want to sit, the Primroses Polyanthuses &c crowd the Hedges; & a Rose Tree or two are quite full of Leaves.”