alliaceae: one of many families or subfamilies into which some classification systems subdivide the Liliaceae but not widely accepted; includes especially genus Allium
liliid monocot family: family of monocotyledonous plants of the subclass Liliidae; mostly herbs usually with petaloid sepals and petals and compound pistils
regression line: a smooth curve fitted to the set of paired data in regression analysis; for linear regression the curve is a straight line