What's the noun for lilioids? Here's the word you're looking for.
lily
Any of several flowers in the genus Lilium of the family Liliaceae, which includes a great many ornamental species.
Any of several species of herbaceousflower which may or may not resemble the genus Lilium in some way, and which are not closely related to it or each other.
(botany) Any of a grade of five monocotorders (Petrosaviales, Dioscoreales, Pandanales, Liliales and Asparagales) in which most species have flowers with relatively large, coloured tepals resembling those of a lily.