1) Caryophylloid dicot family 2) Family chenopodiaceae 3) Goosefoot family 4) Includes spinach and beets 
The Chenopodiaceae are a family of flowering plants, also called the goosefoot family. Although widely recognized in most plant classifications (notably the Cronquist system), the more recent gene-based APG system (1998) and the APG II system (2003) have included these plants in the family Amaranthaceae; molecular phylogeny has shown it to be para...
(from the article `desert`) ...the tropical and temperate margins of the developing deserts. It has been suggested that many typical modern desert plant families, particularly ... Chenopod domestication in the East dates to at least 4500 , when thin-seed-coat specimens appear at the Cloudsplitter and Newt Kash rock shelters in ... .....
The goosefoot family of plants that includes beets, chard, and spinach. ... (12 Dec 1998) ... 
The Chenopodiaceae are a family of monochlamydeous plants which have more or less succulent leaves, flowers that possess a superior syncarpous pistil, with two, three or four styles and an undivided stigma.
[n] - includes spinach and beets
family Chenopodiaceae noun includes spinach and beets