LILIACEOUS
liliaceous
(adjective) of or pertaining to or characteristic of plants of the family Liliaceae
Source: WordNet® 3.1
Etymology
Adjective
liliaceous (comparative more liliaceous, superlative most liliaceous)
(botany) of the Liliaceae family, which contains the lily, and tulip, but which formerly contained a great number of plants now in other families.
Source: Wiktionary
Lil`i*a"ceous, a. Etym: [L. liliaceus, fr. lilium lily. See Lily.]
(Bot.)
(a) Of or pertaining to a natural order of which the lily, tulip, and
hyacinth are well-known examples.
(b) Like the blossom of a lily in general form.
Source: Webster’s Unabridged Dictionary 1913 Edition