amaryllidaceous

from The Century Dictionary.

• Of or pertaining to the Amaryllidaceæ.

from the GNU version of the Collaborative International Dictionary of English.

• adjective (Bot.) Of, pertaining to, or resembling, an order of plants differing from the lily family chiefly in having the ovary below the petals. The narcissus and daffodil are members of this family.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective botany Of or relating to the family Amaryllidaceae of herbaceous, perennial and bulbous flowering plants.