subclass Liliidae
subc·lass·li·liidae
noun
1.
one of four subclasses or superorders of Monocotyledones; comprises 17 families including: Liliaceae; Alliaceae; Amaryllidaceae; Iridaceae; Orchidaceae; Trilliaceae
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WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.