1) Family xyridaceae 2) Liliopsid family 3) Monocot family 4) Yellow-eyed grass family 
The Xyridaceae are a family of flowering plants. The botanical name has been recognized by many taxonomists and is known as the yellow-eyed grass family. The APG II system, of 2003 (unchanged from the APG system of 1998), also recognizes this family, and assigns it to the order Poales in the clade commelinids, in the monocots. This treatment in AP...
(from the article `Commelinales`) The second largest family of the order is the yellow-eyed grass family (Xyridaceae), which has 2 genera (Xyris, 250 species, and Achlyphila, one ...
[n] - plants of tropical to temperate regions
family Xyridaceae noun plants of tropical to temperate regions; usually in wet places