Holly’s big plant family includes hundreds of varieties that range from 70-foot-tall trees to petite shrubs less than a foot tall. Nearly all of these variations can be sorted into four basic groups: English holly (glossy, spiny foliage); American holly (similar to its English cousin, but with duller leaves); Chinese holly (large glossy …
https://www.bhg.com/gardening/plant-dictionary/shrub/holly/

