What is "bromelioideae"

Bromelioideae is a subfamily of the bromeliads ( Bromeliaceae). This subfamily is the most diverse, represented by the greatest number of genera with 32, but the least number of species with 861. Most of the plants in this group are epiphytes, though some have evolved in, or will adapt to, terrestrial conditions. This subfamily features the most plant types which are commonly cultivated by people, including the pineapple.