"Chrysanthemum x hybridum Mammoth 'Dark Bronze Daisy' Garden Chrysanthemum", HortScience, Vol. 50, No. 8, August 2015, p. 1260-1264:
Garden chrysanthemums, Chrysanthemum xgrandiflorum Tzvelv. ( =Dendranthema xgrandiflora Tzvelv.; =C. xmorifolium Ramatuelle), are the number one herbaceous perennial in the top 15 U.S. producing states with a wholesale farm gate value of $27.854 m in 2012 (USDA NASS, 2013). Greenhouse chrysanthemum cultivars of the same species are also widely produced as cut flowers and flowering potted indoor plants worldwide in an extensive range of flower forms, patterns and colors (Anderson, 2006). Fall flowering is a popular trait of all garden types (Anderson, 2006; Dole and Wilkins, 2005). Typical plant habits or phenotypes of garden chrysanthemums are cushion (spherical shape completely covered with flowers obscuring most foliage) and upright (cut flower types) (Langevin, 1992; Widmer, 1980). The cushion habit is the dominant market share form (Anderson, 2004, 2006; Anderson and Gesick, 2003, 2004; Kim and Anderson, 2006), first developed in the 1950s-1970s at the University of Minnesota with the 'Minn' series; 'Minngopher' (PP 4,327) was the first patented cushion cultivar (Widmer, 1978). Mammoth 'Dark Bronze Daisy' garden chrysanthemum was bred, selected, and introduced to continue this outstanding phenotype along with its expansive "shrub" size.