a. 鸢尾科的

[ adj ]
of or pertaining to or characteristic of plants of the family Iridaceae
<adj.pert>

Iridaceous \Ir`i*da"ceous\, Irideous \I*rid"e*ous\, a. [From NL.
Iris, Iridis, the Iris.] (Bot.)
Pertaining to, or resembling, a large natural order of
endogenous plants ({Iridace[ae]}), which includes the genera
{Iris}, {Ixia}, {Crocus}, {Gladiolus}, and many others.