早在1931年,美国派拉蒙植物园园主约翰逊(Hany johnson)就开始了海胆仙人球杂交的尝试,他是美国最早从事海胆仙人球杂交研究的创始者。他在1943年至1946年间,推出了多个杂交海胆仙人球品种,被称为派拉蒙杂交仙人球(Paramount hybrid)。例如他以短毛球(Echinopsis eyriesii,通常称为草球,开白 As early as 1931, Hany johnson, the paramilitarist of the Paramount Botanic Gardens, started his experiment on the hybridization of sea urchin prickly pear. He was the earliest founder of the United States to study sea urchin hybridization. Between 1943 and 1946, he introduced several hybrid sea urchins, known as Paramount hybrids. For example, he uses the Echinopsis eyriesii (commonly known as grass ball, open white)